Merge pull request #463 from DiUS/newcrypto

Crypto module, take 2
This commit is contained in:
Vowstar 2015-06-03 22:02:11 +08:00
commit 18e84623c5
8 changed files with 1310 additions and 3 deletions

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@ -37,7 +37,8 @@ SUBDIRS= \
wofs \
modules \
spiffs \
cjson
cjson \
crypto \
endif # } PDIR
@ -86,6 +87,7 @@ COMPONENTS_eagle.app.v6 = \
wofs/wofs.a \
spiffs/spiffs.a \
cjson/libcjson.a \
crypto/libcrypto.a \
modules/libmodules.a
LINKFLAGS_eagle.app.v6 = \

44
app/crypto/Makefile Normal file
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@ -0,0 +1,44 @@
#############################################################
# Required variables for each makefile
# Discard this section from all parent makefiles
# Expected variables (with automatic defaults):
# CSRCS (all "C" files in the dir)
# SUBDIRS (all subdirs with a Makefile)
# GEN_LIBS - list of libs to be generated ()
# GEN_IMAGES - list of images to be generated ()
# COMPONENTS_xxx - a list of libs/objs in the form
# subdir/lib to be extracted and rolled up into
# a generated lib/image xxx.a ()
#
ifndef PDIR
GEN_LIBS = libcrypto.a
endif
#############################################################
# Configuration i.e. compile options etc.
# Target specific stuff (defines etc.) goes in here!
# Generally values applying to a tree are captured in the
# makefile at its root level - these are then overridden
# for a subtree within the makefile rooted therein
#
#DEFINES +=
#############################################################
# Recursion Magic - Don't touch this!!
#
# Each subtree potentially has an include directory
# corresponding to the common APIs applicable to modules
# rooted at that subtree. Accordingly, the INCLUDE PATH
# of a module can only contain the include directories up
# its parent path, and not its siblings
#
# Required for each makefile to inherit from the parent
#
INCLUDES := $(INCLUDES) -I $(PDIR)include
INCLUDES += -I ./
INCLUDES += -I ../libc
PDIR := ../$(PDIR)
sinclude $(PDIR)Makefile

169
app/crypto/digests.c Normal file
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/*
* Copyright (c) 2015, DiUS Computing Pty Ltd (jmattsson@dius.com.au)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include "digests.h"
#include "user_config.h"
#include "lwip/mem.h"
#include "lwip/arch.h"
#include "ssl/ssl_crypto.h"
#include "sha2.h"
#include <string.h>
#include <c_errno.h>
typedef char ensure_int_and_size_t_same[(sizeof(int)==sizeof(size_t)) ? 0 : -1];
/* None of the functions match the prototype fully due to the void *, and in
some cases also the int vs size_t len, so wrap declarations in a macro. */
#define MECH(pfx, ds, bs) \
{ #pfx, \
(create_ctx_fn)pfx ## _Init, \
(update_ctx_fn)pfx ## _Update, \
(finalize_ctx_fn)pfx ## _Final, \
sizeof(pfx ## _CTX), \
ds, \
bs }
static const digest_mech_info_t hash_mechs[] =
{
MECH(MD2, MD2_SIZE, 16)
,MECH(MD5, MD5_SIZE, 64)
,MECH(SHA1, SHA1_SIZE, 64)
#ifdef SHA2_ENABLE
,MECH(SHA256, SHA256_DIGEST_LENGTH, SHA256_BLOCK_LENGTH)
,MECH(SHA384, SHA384_DIGEST_LENGTH, SHA384_BLOCK_LENGTH)
,MECH(SHA512, SHA512_DIGEST_LENGTH, SHA512_BLOCK_LENGTH)
#endif
};
#undef MECH
const digest_mech_info_t *crypto_digest_mech (const char *mech)
{
if (!mech)
return 0;
size_t i;
for (i = 0; i < (sizeof (hash_mechs) / sizeof (digest_mech_info_t)); ++i)
{
const digest_mech_info_t *mi = hash_mechs + i;
if (strcasecmp (mech, mi->name) == 0)
return mi;
}
return 0;
}
static const char hex[] = "0123456789abcdef";
// note: supports in-place encoding
void crypto_encode_asciihex (const char *bin, size_t binlen, char *outbuf)
{
size_t aidx = binlen * 2 -1;
int i;
for (i = binlen -1; i >= 0; --i)
{
outbuf[aidx--] = hex[bin[i] & 0xf];
outbuf[aidx--] = hex[bin[i] >> 4];
}
}
size_t crypto_digest_size (const char *mech)
{
const digest_mech_info_t *mi = crypto_digest_mech (mech);
return mi ? mi->digest_size : 0;
}
int crypto_hash (const digest_mech_info_t *mi,
const char *data, size_t data_len,
uint8_t *digest)
{
if (!mi)
return EINVAL;
void *ctx = os_malloc (mi->ctx_size);
if (!ctx)
return ENOMEM;
mi->create (ctx);
mi->update (ctx, data, data_len);
mi->finalize (digest, ctx);
os_free (ctx);
return 0;
}
int crypto_hmac (const digest_mech_info_t *mi,
const char *data, size_t data_len,
const char *key, size_t key_len,
uint8_t *digest)
{
if (!mi)
return EINVAL;
void *ctx = os_malloc (mi->ctx_size);
if (!ctx)
return ENOMEM;
// If key too long, it needs to be hashed before use
if (key_len > mi->block_size)
{
mi->create (ctx);
mi->update (ctx, key, key_len);
mi->finalize (digest, ctx);
key = digest;
key_len = mi->block_size;
}
const size_t bs = mi->block_size;
uint8_t k_ipad[bs];
uint8_t k_opad[bs];
os_memset (k_ipad, 0x36, bs);
os_memset (k_opad, 0x5c, bs);
size_t i;
for (i = 0; i < key_len; ++i)
{
k_ipad[i] ^= key[i];
k_opad[i] ^= key[i];
}
mi->create (ctx);
mi->update (ctx, k_ipad, bs);
mi->update (ctx, data, data_len);
mi->finalize (digest, ctx);
mi->create (ctx);
mi->update (ctx, k_opad, bs);
mi->update (ctx, digest, mi->digest_size);
mi->finalize (digest, ctx);
os_free (ctx);
return 0;
}

81
app/crypto/digests.h Normal file
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#ifndef _CRYPTO_DIGESTS_H_
#define _CRYPTO_DIGESTS_H_
#include <c_types.h>
typedef void (*create_ctx_fn)(void *ctx);
typedef void (*update_ctx_fn)(void *ctx, const uint8_t *msg, int len);
typedef void (*finalize_ctx_fn)(uint8_t *digest, void *ctx);
/**
* Description of a message digest mechanism.
*
* Typical usage (if not using the crypto_xxxx() functions below):
* digest_mech_info_t *mi = crypto_digest_mech (chosen_algorithm);
* void *ctx = os_malloc (mi->ctx_size);
* mi->create (ctx);
* mi->update (ctx, data, len);
* ...
* uint8_t *digest = os_malloc (mi->digest_size);
* mi->finalize (digest, ctx);
* ...
* os_free (ctx);
* os_free (digest);
*/
typedef struct
{
const char * name;
create_ctx_fn create;
update_ctx_fn update;
finalize_ctx_fn finalize;
uint16_t ctx_size;
uint16_t digest_size;
uint16_t block_size;
} digest_mech_info_t;
/**
* Looks up the mech data for a specified digest algorithm.
* @param mech The name of the algorithm, e.g. "MD5", "SHA256"
* @returns The mech data, or null if the mech is unknown.
*/
const digest_mech_info_t *crypto_digest_mech (const char *mech);
/**
* Wrapper function for performing a one-in-all hashing operation.
* @param mi A mech from @c crypto_digest_mech(). A null pointer @c mi
* is harmless, but will of course result in an error return.
* @param data The data to create a digest for.
* @param data_len Number of bytes at @c data to digest.
* @param digest Output buffer, must be at least @c mi->digest_size in size.
* @return 0 on success, non-zero on error.
*/
int crypto_hash (const digest_mech_info_t *mi, const char *data, size_t data_len, uint8_t *digest);
/**
* Generate a HMAC signature.
* @param mi A mech from @c crypto_digest_mech(). A null pointer @c mi
* is harmless, but will of course result in an error return.
* @param data The data to generate a signature for.
* @param data_len Number of bytes at @c data to process.
* @param key The key to use.
* @param key_len Number of bytes the @c key comprises.
* @param digest Output buffer, must be at least @c mi->digest_size in size.
* @return 0 on success, non-zero on error.
*/
int crypto_hmac (const digest_mech_info_t *mi, const char *data, size_t data_len, const char *key, size_t key_len, uint8_t *digest);
/**
* Perform ASCII Hex encoding. Does not null-terminate the buffer.
*
* @param bin The buffer to ascii-hex encode.
* @param bin_len Number of bytes in @c bin to encode.
* @param outbuf Output buffer, must be at least @c bin_len*2 bytes in size.
* Note that in-place encoding is supported, and as such
* bin==outbuf is safe, provided the buffer is large enough.
*/
void crypto_encode_asciihex (const char *bin, size_t bin_len, char *outbuf);
#endif

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app/crypto/sha2.c Normal file
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/*
* FILE: sha2.c
* AUTHOR: Aaron D. Gifford - http://www.aarongifford.com/
*
* Copyright (c) 2000-2001, Aaron D. Gifford
* Copyright (c) 2015, DiUS Computing Pty Ltd (jmattsson@dius.com.au)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include "user_config.h"
#ifdef SHA2_ENABLE
#include "sha2.h"
#include <string.h> /* memcpy()/memset() or bcopy()/bzero() */
#define assert(x) do {} while (0)
/*
* ASSERT NOTE:
* Some sanity checking code is included using assert(). On my FreeBSD
* system, this additional code can be removed by compiling with NDEBUG
* defined. Check your own systems manpage on assert() to see how to
* compile WITHOUT the sanity checking code on your system.
*
* UNROLLED TRANSFORM LOOP NOTE:
* You can define SHA2_UNROLL_TRANSFORM to use the unrolled transform
* loop version for the hash transform rounds (defined using macros
* later in this file). Either define on the command line, for example:
*
* cc -DSHA2_UNROLL_TRANSFORM -o sha2 sha2.c sha2prog.c
*
* or define below:
*
* #define SHA2_UNROLL_TRANSFORM
*
*/
typedef uint8_t sha2_byte; /* Exactly 1 byte */
typedef uint32_t sha2_word32; /* Exactly 4 bytes */
typedef uint64_t sha2_word64; /* Exactly 8 bytes */
/*** SHA-256/384/512 Various Length Definitions ***********************/
#define SHA256_SHORT_BLOCK_LENGTH (SHA256_BLOCK_LENGTH - 8)
#define SHA384_SHORT_BLOCK_LENGTH (SHA384_BLOCK_LENGTH - 16)
#define SHA512_SHORT_BLOCK_LENGTH (SHA512_BLOCK_LENGTH - 16)
/*** ENDIAN REVERSAL MACROS *******************************************/
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define REVERSE32(w,x) { \
sha2_word32 tmp = (w); \
tmp = (tmp >> 16) | (tmp << 16); \
(x) = ((tmp & 0xff00ff00UL) >> 8) | ((tmp & 0x00ff00ffUL) << 8); \
}
#define REVERSE64(w,x) { \
sha2_word64 tmp = (w); \
tmp = (tmp >> 32) | (tmp << 32); \
tmp = ((tmp & 0xff00ff00ff00ff00ULL) >> 8) | \
((tmp & 0x00ff00ff00ff00ffULL) << 8); \
(x) = ((tmp & 0xffff0000ffff0000ULL) >> 16) | \
((tmp & 0x0000ffff0000ffffULL) << 16); \
}
#endif /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ */
/*
* Macro for incrementally adding the unsigned 64-bit integer n to the
* unsigned 128-bit integer (represented using a two-element array of
* 64-bit words):
*/
#define ADDINC128(w,n) { \
(w)[0] += (sha2_word64)(n); \
if ((w)[0] < (n)) { \
(w)[1]++; \
} \
}
/*
* Macros for copying blocks of memory and for zeroing out ranges
* of memory. Using these macros makes it easy to switch from
* using memset()/memcpy() and using bzero()/bcopy().
*
* Please define either SHA2_USE_MEMSET_MEMCPY or define
* SHA2_USE_BZERO_BCOPY depending on which function set you
* choose to use:
*/
#if !defined(SHA2_USE_MEMSET_MEMCPY) && !defined(SHA2_USE_BZERO_BCOPY)
/* Default to memset()/memcpy() if no option is specified */
#define SHA2_USE_MEMSET_MEMCPY 1
#endif
#if defined(SHA2_USE_MEMSET_MEMCPY) && defined(SHA2_USE_BZERO_BCOPY)
/* Abort with an error if BOTH options are defined */
#error Define either SHA2_USE_MEMSET_MEMCPY or SHA2_USE_BZERO_BCOPY, not both!
#endif
#ifdef SHA2_USE_MEMSET_MEMCPY
#define MEMSET_BZERO(p,l) memset((p), 0, (l))
#define MEMCPY_BCOPY(d,s,l) memcpy((d), (s), (l))
#endif
#ifdef SHA2_USE_BZERO_BCOPY
#define MEMSET_BZERO(p,l) bzero((p), (l))
#define MEMCPY_BCOPY(d,s,l) bcopy((s), (d), (l))
#endif
/*** THE SIX LOGICAL FUNCTIONS ****************************************/
/*
* Bit shifting and rotation (used by the six SHA-XYZ logical functions:
*
* NOTE: The naming of R and S appears backwards here (R is a SHIFT and
* S is a ROTATION) because the SHA-256/384/512 description document
* (see http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf) uses this
* same "backwards" definition.
*/
/* Shift-right (used in SHA-256, SHA-384, and SHA-512): */
#define R(b,x) ((x) >> (b))
/* 32-bit Rotate-right (used in SHA-256): */
#define S32(b,x) (((x) >> (b)) | ((x) << (32 - (b))))
/* 64-bit Rotate-right (used in SHA-384 and SHA-512): */
#define S64(b,x) (((x) >> (b)) | ((x) << (64 - (b))))
/* Two of six logical functions used in SHA-256, SHA-384, and SHA-512: */
#define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
#define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
/* Four of six logical functions used in SHA-256: */
#define Sigma0_256(x) (S32(2, (x)) ^ S32(13, (x)) ^ S32(22, (x)))
#define Sigma1_256(x) (S32(6, (x)) ^ S32(11, (x)) ^ S32(25, (x)))
#define sigma0_256(x) (S32(7, (x)) ^ S32(18, (x)) ^ R(3 , (x)))
#define sigma1_256(x) (S32(17, (x)) ^ S32(19, (x)) ^ R(10, (x)))
/* Four of six logical functions used in SHA-384 and SHA-512: */
#define Sigma0_512(x) (S64(28, (x)) ^ S64(34, (x)) ^ S64(39, (x)))
#define Sigma1_512(x) (S64(14, (x)) ^ S64(18, (x)) ^ S64(41, (x)))
#define sigma0_512(x) (S64( 1, (x)) ^ S64( 8, (x)) ^ R( 7, (x)))
#define sigma1_512(x) (S64(19, (x)) ^ S64(61, (x)) ^ R( 6, (x)))
/*** INTERNAL FUNCTION PROTOTYPES *************************************/
/* NOTE: These should not be accessed directly from outside this
* library -- they are intended for private internal visibility/use
* only.
*/
void SHA512_Last(SHA512_CTX*);
void SHA256_Transform(SHA256_CTX*, const sha2_word32*);
void SHA512_Transform(SHA512_CTX*, const sha2_word64*);
/*** SHA-XYZ INITIAL HASH VALUES AND CONSTANTS ************************/
/* Hash constant words K for SHA-256: */
const static sha2_word32 K256[64] = {
0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL,
0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL,
0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL,
0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL,
0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL,
0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL,
0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL,
0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL,
0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
};
/* Initial hash value H for SHA-256: */
const static sha2_word32 sha256_initial_hash_value[8] = {
0x6a09e667UL,
0xbb67ae85UL,
0x3c6ef372UL,
0xa54ff53aUL,
0x510e527fUL,
0x9b05688cUL,
0x1f83d9abUL,
0x5be0cd19UL
};
/* Hash constant words K for SHA-384 and SHA-512: */
const static sha2_word64 K512[80] = {
0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
};
/* Initial hash value H for SHA-384 */
const static sha2_word64 sha384_initial_hash_value[8] = {
0xcbbb9d5dc1059ed8ULL,
0x629a292a367cd507ULL,
0x9159015a3070dd17ULL,
0x152fecd8f70e5939ULL,
0x67332667ffc00b31ULL,
0x8eb44a8768581511ULL,
0xdb0c2e0d64f98fa7ULL,
0x47b5481dbefa4fa4ULL
};
/* Initial hash value H for SHA-512 */
const static sha2_word64 sha512_initial_hash_value[8] = {
0x6a09e667f3bcc908ULL,
0xbb67ae8584caa73bULL,
0x3c6ef372fe94f82bULL,
0xa54ff53a5f1d36f1ULL,
0x510e527fade682d1ULL,
0x9b05688c2b3e6c1fULL,
0x1f83d9abfb41bd6bULL,
0x5be0cd19137e2179ULL
};
/*** SHA-256: *********************************************************/
void ICACHE_FLASH_ATTR SHA256_Init(SHA256_CTX* context) {
if (context == (SHA256_CTX*)0) {
return;
}
MEMCPY_BCOPY(context->state, sha256_initial_hash_value, SHA256_DIGEST_LENGTH);
MEMSET_BZERO(context->buffer, SHA256_BLOCK_LENGTH);
context->bitcount = 0;
}
#ifdef SHA2_UNROLL_TRANSFORM
/* Unrolled SHA-256 round macros: */
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN_
#define ROUND256_0_TO_15(a,b,c,d,e,f,g,h) \
REVERSE32(*data++, W256[j]); \
T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + \
K256[j] + W256[j]; \
(d) += T1; \
(h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
j++
#else /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN_ */
#define ROUND256_0_TO_15(a,b,c,d,e,f,g,h) \
T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + \
K256[j] + (W256[j] = *data++); \
(d) += T1; \
(h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
j++
#endif /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN_ */
#define ROUND256(a,b,c,d,e,f,g,h) \
s0 = W256[(j+1)&0x0f]; \
s0 = sigma0_256(s0); \
s1 = W256[(j+14)&0x0f]; \
s1 = sigma1_256(s1); \
T1 = (h) + Sigma1_256(e) + Ch((e), (f), (g)) + K256[j] + \
(W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0); \
(d) += T1; \
(h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \
j++
void ICACHE_FLASH_ATTR SHA256_Transform(SHA256_CTX* context, const sha2_word32* data) {
sha2_word32 a, b, c, d, e, f, g, h, s0, s1;
sha2_word32 T1, *W256;
int j;
W256 = (sha2_word32*)context->buffer;
/* Initialize registers with the prev. intermediate value */
a = context->state[0];
b = context->state[1];
c = context->state[2];
d = context->state[3];
e = context->state[4];
f = context->state[5];
g = context->state[6];
h = context->state[7];
j = 0;
do {
/* Rounds 0 to 15 (unrolled): */
ROUND256_0_TO_15(a,b,c,d,e,f,g,h);
ROUND256_0_TO_15(h,a,b,c,d,e,f,g);
ROUND256_0_TO_15(g,h,a,b,c,d,e,f);
ROUND256_0_TO_15(f,g,h,a,b,c,d,e);
ROUND256_0_TO_15(e,f,g,h,a,b,c,d);
ROUND256_0_TO_15(d,e,f,g,h,a,b,c);
ROUND256_0_TO_15(c,d,e,f,g,h,a,b);
ROUND256_0_TO_15(b,c,d,e,f,g,h,a);
} while (j < 16);
/* Now for the remaining rounds to 64: */
do {
ROUND256(a,b,c,d,e,f,g,h);
ROUND256(h,a,b,c,d,e,f,g);
ROUND256(g,h,a,b,c,d,e,f);
ROUND256(f,g,h,a,b,c,d,e);
ROUND256(e,f,g,h,a,b,c,d);
ROUND256(d,e,f,g,h,a,b,c);
ROUND256(c,d,e,f,g,h,a,b);
ROUND256(b,c,d,e,f,g,h,a);
} while (j < 64);
/* Compute the current intermediate hash value */
context->state[0] += a;
context->state[1] += b;
context->state[2] += c;
context->state[3] += d;
context->state[4] += e;
context->state[5] += f;
context->state[6] += g;
context->state[7] += h;
/* Clean up */
a = b = c = d = e = f = g = h = T1 = 0;
}
#else /* SHA2_UNROLL_TRANSFORM */
void ICACHE_FLASH_ATTR SHA256_Transform(SHA256_CTX* context, const sha2_word32* data) {
sha2_word32 a, b, c, d, e, f, g, h, s0, s1;
sha2_word32 T1, T2, *W256;
int j;
W256 = (sha2_word32*)context->buffer;
/* Initialize registers with the prev. intermediate value */
a = context->state[0];
b = context->state[1];
c = context->state[2];
d = context->state[3];
e = context->state[4];
f = context->state[5];
g = context->state[6];
h = context->state[7];
j = 0;
do {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
/* Copy data while converting to host byte order */
REVERSE32(*data++,W256[j]);
/* Apply the SHA-256 compression function to update a..h */
T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + W256[j];
#else /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN_ */
/* Apply the SHA-256 compression function to update a..h with copy */
T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + (W256[j] = *data++);
#endif /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN_ */
T2 = Sigma0_256(a) + Maj(a, b, c);
h = g;
g = f;
f = e;
e = d + T1;
d = c;
c = b;
b = a;
a = T1 + T2;
j++;
} while (j < 16);
do {
/* Part of the message block expansion: */
s0 = W256[(j+1)&0x0f];
s0 = sigma0_256(s0);
s1 = W256[(j+14)&0x0f];
s1 = sigma1_256(s1);
/* Apply the SHA-256 compression function to update a..h */
T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] +
(W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0);
T2 = Sigma0_256(a) + Maj(a, b, c);
h = g;
g = f;
f = e;
e = d + T1;
d = c;
c = b;
b = a;
a = T1 + T2;
j++;
} while (j < 64);
/* Compute the current intermediate hash value */
context->state[0] += a;
context->state[1] += b;
context->state[2] += c;
context->state[3] += d;
context->state[4] += e;
context->state[5] += f;
context->state[6] += g;
context->state[7] += h;
/* Clean up */
a = b = c = d = e = f = g = h = T1 = T2 = 0;
}
#endif /* SHA2_UNROLL_TRANSFORM */
void ICACHE_FLASH_ATTR SHA256_Update(SHA256_CTX* context, const sha2_byte *data, size_t len) {
unsigned int freespace, usedspace;
if (len == 0) {
/* Calling with no data is valid - we do nothing */
return;
}
/* Sanity check: */
assert(context != (SHA256_CTX*)0 && data != (sha2_byte*)0);
usedspace = (context->bitcount >> 3) % SHA256_BLOCK_LENGTH;
if (usedspace > 0) {
/* Calculate how much free space is available in the buffer */
freespace = SHA256_BLOCK_LENGTH - usedspace;
if (len >= freespace) {
/* Fill the buffer completely and process it */
MEMCPY_BCOPY(&context->buffer[usedspace], data, freespace);
context->bitcount += freespace << 3;
len -= freespace;
data += freespace;
SHA256_Transform(context, (sha2_word32*)context->buffer);
} else {
/* The buffer is not yet full */
MEMCPY_BCOPY(&context->buffer[usedspace], data, len);
context->bitcount += len << 3;
/* Clean up: */
usedspace = freespace = 0;
return;
}
}
while (len >= SHA256_BLOCK_LENGTH) {
/* Process as many complete blocks as we can */
SHA256_Transform(context, (sha2_word32*)data);
context->bitcount += SHA256_BLOCK_LENGTH << 3;
len -= SHA256_BLOCK_LENGTH;
data += SHA256_BLOCK_LENGTH;
}
if (len > 0) {
/* There's left-overs, so save 'em */
MEMCPY_BCOPY(context->buffer, data, len);
context->bitcount += len << 3;
}
/* Clean up: */
usedspace = freespace = 0;
}
void ICACHE_FLASH_ATTR SHA256_Final(sha2_byte digest[], SHA256_CTX* context) {
sha2_word32 *d = (sha2_word32*)digest;
unsigned int usedspace;
/* Sanity check: */
assert(context != (SHA256_CTX*)0);
/* If no digest buffer is passed, we don't bother doing this: */
if (digest != (sha2_byte*)0) {
usedspace = (context->bitcount >> 3) % SHA256_BLOCK_LENGTH;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
/* Convert FROM host byte order */
REVERSE64(context->bitcount,context->bitcount);
#endif
if (usedspace > 0) {
/* Begin padding with a 1 bit: */
context->buffer[usedspace++] = 0x80;
if (usedspace <= SHA256_SHORT_BLOCK_LENGTH) {
/* Set-up for the last transform: */
MEMSET_BZERO(&context->buffer[usedspace], SHA256_SHORT_BLOCK_LENGTH - usedspace);
} else {
if (usedspace < SHA256_BLOCK_LENGTH) {
MEMSET_BZERO(&context->buffer[usedspace], SHA256_BLOCK_LENGTH - usedspace);
}
/* Do second-to-last transform: */
SHA256_Transform(context, (sha2_word32*)context->buffer);
/* And set-up for the last transform: */
MEMSET_BZERO(context->buffer, SHA256_SHORT_BLOCK_LENGTH);
}
} else {
/* Set-up for the last transform: */
MEMSET_BZERO(context->buffer, SHA256_SHORT_BLOCK_LENGTH);
/* Begin padding with a 1 bit: */
*context->buffer = 0x80;
}
/* Set the bit count: */
*(sha2_word64*)&context->buffer[SHA256_SHORT_BLOCK_LENGTH] = context->bitcount;
/* Final transform: */
SHA256_Transform(context, (sha2_word32*)context->buffer);
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
{
/* Convert TO host byte order */
int j;
for (j = 0; j < 8; j++) {
REVERSE32(context->state[j],context->state[j]);
*d++ = context->state[j];
}
}
#else
MEMCPY_BCOPY(d, context->state, SHA256_DIGEST_LENGTH);
#endif
}
/* Clean up state data: */
MEMSET_BZERO(context, sizeof(SHA256_CTX));
usedspace = 0;
}
/*** SHA-512: *********************************************************/
void ICACHE_FLASH_ATTR SHA512_Init(SHA512_CTX* context) {
if (context == (SHA512_CTX*)0) {
return;
}
MEMCPY_BCOPY(context->state, sha512_initial_hash_value, SHA512_DIGEST_LENGTH);
MEMSET_BZERO(context->buffer, SHA512_BLOCK_LENGTH);
context->bitcount[0] = context->bitcount[1] = 0;
}
#ifdef SHA2_UNROLL_TRANSFORM
/* Unrolled SHA-512 round macros: */
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN_
#define ROUND512_0_TO_15(a,b,c,d,e,f,g,h) \
REVERSE64(*data++, W512[j]); \
T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + \
K512[j] + W512[j]; \
(d) += T1, \
(h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)), \
j++
#else /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN_ */
#define ROUND512_0_TO_15(a,b,c,d,e,f,g,h) \
T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + \
K512[j] + (W512[j] = *data++); \
(d) += T1; \
(h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \
j++
#endif /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN_ */
#define ROUND512(a,b,c,d,e,f,g,h) \
s0 = W512[(j+1)&0x0f]; \
s0 = sigma0_512(s0); \
s1 = W512[(j+14)&0x0f]; \
s1 = sigma1_512(s1); \
T1 = (h) + Sigma1_512(e) + Ch((e), (f), (g)) + K512[j] + \
(W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0); \
(d) += T1; \
(h) = T1 + Sigma0_512(a) + Maj((a), (b), (c)); \
j++
void ICACHE_FLASH_ATTR SHA512_Transform(SHA512_CTX* context, const sha2_word64* data) {
sha2_word64 a, b, c, d, e, f, g, h, s0, s1;
sha2_word64 T1, *W512 = (sha2_word64*)context->buffer;
int j;
/* Initialize registers with the prev. intermediate value */
a = context->state[0];
b = context->state[1];
c = context->state[2];
d = context->state[3];
e = context->state[4];
f = context->state[5];
g = context->state[6];
h = context->state[7];
j = 0;
do {
ROUND512_0_TO_15(a,b,c,d,e,f,g,h);
ROUND512_0_TO_15(h,a,b,c,d,e,f,g);
ROUND512_0_TO_15(g,h,a,b,c,d,e,f);
ROUND512_0_TO_15(f,g,h,a,b,c,d,e);
ROUND512_0_TO_15(e,f,g,h,a,b,c,d);
ROUND512_0_TO_15(d,e,f,g,h,a,b,c);
ROUND512_0_TO_15(c,d,e,f,g,h,a,b);
ROUND512_0_TO_15(b,c,d,e,f,g,h,a);
} while (j < 16);
/* Now for the remaining rounds up to 79: */
do {
ROUND512(a,b,c,d,e,f,g,h);
ROUND512(h,a,b,c,d,e,f,g);
ROUND512(g,h,a,b,c,d,e,f);
ROUND512(f,g,h,a,b,c,d,e);
ROUND512(e,f,g,h,a,b,c,d);
ROUND512(d,e,f,g,h,a,b,c);
ROUND512(c,d,e,f,g,h,a,b);
ROUND512(b,c,d,e,f,g,h,a);
} while (j < 80);
/* Compute the current intermediate hash value */
context->state[0] += a;
context->state[1] += b;
context->state[2] += c;
context->state[3] += d;
context->state[4] += e;
context->state[5] += f;
context->state[6] += g;
context->state[7] += h;
/* Clean up */
a = b = c = d = e = f = g = h = T1 = 0;
}
#else /* SHA2_UNROLL_TRANSFORM */
void ICACHE_FLASH_ATTR SHA512_Transform(SHA512_CTX* context, const sha2_word64* data) {
sha2_word64 a, b, c, d, e, f, g, h, s0, s1;
sha2_word64 T1, T2, *W512 = (sha2_word64*)context->buffer;
int j;
/* Initialize registers with the prev. intermediate value */
a = context->state[0];
b = context->state[1];
c = context->state[2];
d = context->state[3];
e = context->state[4];
f = context->state[5];
g = context->state[6];
h = context->state[7];
j = 0;
do {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
/* Convert TO host byte order */
REVERSE64(*data++, W512[j]);
/* Apply the SHA-512 compression function to update a..h */
T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + W512[j];
#else /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN_ */
/* Apply the SHA-512 compression function to update a..h with copy */
T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + (W512[j] = *data++);
#endif /* __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN_ */
T2 = Sigma0_512(a) + Maj(a, b, c);
h = g;
g = f;
f = e;
e = d + T1;
d = c;
c = b;
b = a;
a = T1 + T2;
j++;
} while (j < 16);
do {
/* Part of the message block expansion: */
s0 = W512[(j+1)&0x0f];
s0 = sigma0_512(s0);
s1 = W512[(j+14)&0x0f];
s1 = sigma1_512(s1);
/* Apply the SHA-512 compression function to update a..h */
T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] +
(W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0);
T2 = Sigma0_512(a) + Maj(a, b, c);
h = g;
g = f;
f = e;
e = d + T1;
d = c;
c = b;
b = a;
a = T1 + T2;
j++;
} while (j < 80);
/* Compute the current intermediate hash value */
context->state[0] += a;
context->state[1] += b;
context->state[2] += c;
context->state[3] += d;
context->state[4] += e;
context->state[5] += f;
context->state[6] += g;
context->state[7] += h;
/* Clean up */
a = b = c = d = e = f = g = h = T1 = T2 = 0;
}
#endif /* SHA2_UNROLL_TRANSFORM */
void ICACHE_FLASH_ATTR SHA512_Update(SHA512_CTX* context, const sha2_byte *data, size_t len) {
unsigned int freespace, usedspace;
if (len == 0) {
/* Calling with no data is valid - we do nothing */
return;
}
/* Sanity check: */
assert(context != (SHA512_CTX*)0 && data != (sha2_byte*)0);
usedspace = (context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH;
if (usedspace > 0) {
/* Calculate how much free space is available in the buffer */
freespace = SHA512_BLOCK_LENGTH - usedspace;
if (len >= freespace) {
/* Fill the buffer completely and process it */
MEMCPY_BCOPY(&context->buffer[usedspace], data, freespace);
ADDINC128(context->bitcount, freespace << 3);
len -= freespace;
data += freespace;
SHA512_Transform(context, (sha2_word64*)context->buffer);
} else {
/* The buffer is not yet full */
MEMCPY_BCOPY(&context->buffer[usedspace], data, len);
ADDINC128(context->bitcount, len << 3);
/* Clean up: */
usedspace = freespace = 0;
return;
}
}
while (len >= SHA512_BLOCK_LENGTH) {
/* Process as many complete blocks as we can */
SHA512_Transform(context, (sha2_word64*)data);
ADDINC128(context->bitcount, SHA512_BLOCK_LENGTH << 3);
len -= SHA512_BLOCK_LENGTH;
data += SHA512_BLOCK_LENGTH;
}
if (len > 0) {
/* There's left-overs, so save 'em */
MEMCPY_BCOPY(context->buffer, data, len);
ADDINC128(context->bitcount, len << 3);
}
/* Clean up: */
usedspace = freespace = 0;
}
void ICACHE_FLASH_ATTR SHA512_Last(SHA512_CTX* context) {
unsigned int usedspace;
usedspace = (context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
/* Convert FROM host byte order */
REVERSE64(context->bitcount[0],context->bitcount[0]);
REVERSE64(context->bitcount[1],context->bitcount[1]);
#endif
if (usedspace > 0) {
/* Begin padding with a 1 bit: */
context->buffer[usedspace++] = 0x80;
if (usedspace <= SHA512_SHORT_BLOCK_LENGTH) {
/* Set-up for the last transform: */
MEMSET_BZERO(&context->buffer[usedspace], SHA512_SHORT_BLOCK_LENGTH - usedspace);
} else {
if (usedspace < SHA512_BLOCK_LENGTH) {
MEMSET_BZERO(&context->buffer[usedspace], SHA512_BLOCK_LENGTH - usedspace);
}
/* Do second-to-last transform: */
SHA512_Transform(context, (sha2_word64*)context->buffer);
/* And set-up for the last transform: */
MEMSET_BZERO(context->buffer, SHA512_BLOCK_LENGTH - 2);
}
} else {
/* Prepare for final transform: */
MEMSET_BZERO(context->buffer, SHA512_SHORT_BLOCK_LENGTH);
/* Begin padding with a 1 bit: */
*context->buffer = 0x80;
}
/* Store the length of input data (in bits): */
*(sha2_word64*)&context->buffer[SHA512_SHORT_BLOCK_LENGTH] = context->bitcount[1];
*(sha2_word64*)&context->buffer[SHA512_SHORT_BLOCK_LENGTH+8] = context->bitcount[0];
/* Final transform: */
SHA512_Transform(context, (sha2_word64*)context->buffer);
}
void ICACHE_FLASH_ATTR SHA512_Final(sha2_byte digest[], SHA512_CTX* context) {
sha2_word64 *d = (sha2_word64*)digest;
/* Sanity check: */
assert(context != (SHA512_CTX*)0);
/* If no digest buffer is passed, we don't bother doing this: */
if (digest != (sha2_byte*)0) {
SHA512_Last(context);
/* Save the hash data for output: */
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
{
/* Convert TO host byte order */
int j;
for (j = 0; j < 8; j++) {
REVERSE64(context->state[j],context->state[j]);
*d++ = context->state[j];
}
}
#else
MEMCPY_BCOPY(d, context->state, SHA512_DIGEST_LENGTH);
#endif
}
/* Zero out state data */
MEMSET_BZERO(context, sizeof(SHA512_CTX));
}
/*** SHA-384: *********************************************************/
void ICACHE_FLASH_ATTR SHA384_Init(SHA384_CTX* context) {
if (context == (SHA384_CTX*)0) {
return;
}
MEMCPY_BCOPY(context->state, sha384_initial_hash_value, SHA512_DIGEST_LENGTH);
MEMSET_BZERO(context->buffer, SHA384_BLOCK_LENGTH);
context->bitcount[0] = context->bitcount[1] = 0;
}
void ICACHE_FLASH_ATTR SHA384_Update(SHA384_CTX* context, const sha2_byte* data, size_t len) {
SHA512_Update((SHA512_CTX*)context, data, len);
}
void ICACHE_FLASH_ATTR SHA384_Final(sha2_byte digest[], SHA384_CTX* context) {
sha2_word64 *d = (sha2_word64*)digest;
/* Sanity check: */
assert(context != (SHA384_CTX*)0);
/* If no digest buffer is passed, we don't bother doing this: */
if (digest != (sha2_byte*)0) {
SHA512_Last((SHA512_CTX*)context);
/* Save the hash data for output: */
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
{
/* Convert TO host byte order */
int j;
for (j = 0; j < 6; j++) {
REVERSE64(context->state[j],context->state[j]);
*d++ = context->state[j];
}
}
#else
MEMCPY_BCOPY(d, context->state, SHA384_DIGEST_LENGTH);
#endif
}
/* Zero out state data */
MEMSET_BZERO(context, sizeof(SHA384_CTX));
}
#endif // SHA2_ENABLE

47
app/crypto/sha2.h Normal file
View File

@ -0,0 +1,47 @@
#ifndef __SHA2_H__
#define __SHA2_H__
#include <c_types.h>
/**************************************************************************
* SHA256/384/512 declarations
**************************************************************************/
#define SHA256_BLOCK_LENGTH 64
#define SHA256_DIGEST_LENGTH 32
typedef struct
{
uint32_t state[8];
uint64_t bitcount;
uint8_t buffer[SHA256_BLOCK_LENGTH];
} SHA256_CTX;
void SHA256_Init(SHA256_CTX *);
void SHA256_Update(SHA256_CTX *, const uint8_t *msg, size_t len);
void SHA256_Final(uint8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
#define SHA384_BLOCK_LENGTH 128
#define SHA384_DIGEST_LENGTH 48
typedef struct
{
uint64_t state[8];
uint64_t bitcount[2];
uint8_t buffer[SHA384_BLOCK_LENGTH];
} SHA384_CTX;
void SHA384_Init(SHA384_CTX*);
void SHA384_Update(SHA384_CTX*, const uint8_t *msg, size_t len);
void SHA384_Final(uint8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
#define SHA512_BLOCK_LENGTH 128
#define SHA512_DIGEST_LENGTH 64
typedef SHA384_CTX SHA512_CTX;
void SHA512_Init(SHA512_CTX*);
void SHA512_Update(SHA512_CTX*, const uint8_t *msg, size_t len);
void SHA512_Final(uint8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
#endif

View File

@ -41,6 +41,7 @@
#define CLIENT_SSL_ENABLE
#define GPIO_INTERRUPT_ENABLE
#define SHA2_ENABLE
// #define BUILD_WOFS 1
#define BUILD_SPIFFS 1

View File

@ -8,6 +8,7 @@
#include "lrotable.h"
#include "c_types.h"
#include "c_stdlib.h"
#include "../crypto/digests.h"
#include "user_interface.h"
@ -39,7 +40,7 @@ static int crypto_sha1( lua_State* L )
static const char* bytes64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/**
* encoded = crypto.base64Encode(raw)
* encoded = crypto.toBase64(raw)
*
* Encodes raw binary string as base64 string.
*/
@ -66,7 +67,7 @@ static int crypto_base64_encode( lua_State* L )
static const char* byteshex = "0123456789abcdef";
/**
* encoded = crypto.hexEncode(raw)
* encoded = crypto.toHex(raw)
*
* Encodes raw binary string as hex string.
*/
@ -105,6 +106,53 @@ static int crypto_mask( lua_State* L )
return 1;
}
static inline int bad_mech (lua_State *L) { return luaL_error (L, "unknown hash mech"); }
static inline int bad_mem (lua_State *L) { return luaL_error (L, "insufficient memory"); }
/* rawdigest = crypto.hash("MD5", str)
* strdigest = crypto.toHex(rawdigest)
*/
static int crypto_lhash (lua_State *L)
{
const digest_mech_info_t *mi = crypto_digest_mech (luaL_checkstring (L, 1));
if (!mi)
return bad_mech (L);
size_t len = 0;
const char *data = luaL_checklstring (L, 2, &len);
uint8_t digest[mi->digest_size];
if (crypto_hash (mi, data, len, digest) != 0)
return bad_mem (L);
lua_pushlstring (L, digest, sizeof (digest));
return 1;
}
/* rawsignature = crypto.hmac("SHA1", str, key)
* strsignature = crypto.toHex(rawsignature)
*/
static int crypto_lhmac (lua_State *L)
{
const digest_mech_info_t *mi = crypto_digest_mech (luaL_checkstring (L, 1));
if (!mi)
return bad_mech (L);
size_t len = 0;
const char *data = luaL_checklstring (L, 2, &len);
size_t klen = 0;
const char *key = luaL_checklstring (L, 3, &klen);
uint8_t digest[mi->digest_size];
if (crypto_hmac (mi, data, len, key, klen, digest) != 0)
return bad_mem (L);
lua_pushlstring (L, digest, sizeof (digest));
return 1;
}
// Module function map
#define MIN_OPT_LEVEL 2
#include "lrodefs.h"
@ -114,6 +162,8 @@ const LUA_REG_TYPE crypto_map[] =
{ LSTRKEY( "toBase64" ), LFUNCVAL( crypto_base64_encode ) },
{ LSTRKEY( "toHex" ), LFUNCVAL( crypto_hex_encode ) },
{ LSTRKEY( "mask" ), LFUNCVAL( crypto_mask ) },
{ LSTRKEY( "hash" ), LFUNCVAL( crypto_lhash ) },
{ LSTRKEY( "hmac" ), LFUNCVAL( crypto_lhmac ) },
#if LUA_OPTIMIZE_MEMORY > 0