legacy_sha.c
/*
* Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/*
* All SHA low level APIs are deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
#include <openssl/sha.h> /* diverse SHA macros */
#include "internal/sha3.h" /* KECCAK1600_WIDTH */
#include "crypto/evp.h"
/* Used by legacy methods */
#include "crypto/sha.h"
#include "legacy_meth.h"
#include "evp_local.h"
/*-
* LEGACY methods for SHA.
* These only remain to support engines that can get these methods.
* Hardware support for SHA3 has been removed from these legacy cases.
*/
#define IMPLEMENT_LEGACY_EVP_MD_METH_SHA3(nm, fn, tag) \
static int nm##_init(EVP_MD_CTX *ctx) \
{ \
return fn##_init(EVP_MD_CTX_md_data(ctx), tag, ctx->digest->md_size * 8); \
} \
static int nm##_update(EVP_MD_CTX *ctx, const void *data, size_t count) \
{ \
return fn##_update(EVP_MD_CTX_md_data(ctx), data, count); \
} \
static int nm##_final(EVP_MD_CTX *ctx, unsigned char *md) \
{ \
return fn##_final(md, EVP_MD_CTX_md_data(ctx)); \
}
#define IMPLEMENT_LEGACY_EVP_MD_METH_SHAKE(nm, fn, tag) \
static int nm##_init(EVP_MD_CTX *ctx) \
{ \
return fn##_init(EVP_MD_CTX_md_data(ctx), tag, ctx->digest->md_size * 8); \
} \
#define sha512_224_Init sha512_224_init
#define sha512_256_Init sha512_256_init
#define sha512_224_Update SHA512_Update
#define sha512_224_Final SHA512_Final
#define sha512_256_Update SHA512_Update
#define sha512_256_Final SHA512_Final
IMPLEMENT_LEGACY_EVP_MD_METH(sha1, SHA1)
IMPLEMENT_LEGACY_EVP_MD_METH(sha224, SHA224)
IMPLEMENT_LEGACY_EVP_MD_METH(sha256, SHA256)
IMPLEMENT_LEGACY_EVP_MD_METH(sha384, SHA384)
IMPLEMENT_LEGACY_EVP_MD_METH(sha512, SHA512)
IMPLEMENT_LEGACY_EVP_MD_METH(sha512_224_int, sha512_224)
IMPLEMENT_LEGACY_EVP_MD_METH(sha512_256_int, sha512_256)
IMPLEMENT_LEGACY_EVP_MD_METH_SHA3(sha3_int, sha3, '\x06')
IMPLEMENT_LEGACY_EVP_MD_METH_SHAKE(shake, sha3, '\x1f')
static int sha1_int_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2)
{
return sha1_ctrl(ctx != NULL ? EVP_MD_CTX_md_data(ctx) : NULL, cmd, p1, p2);
}
static int shake_ctrl(EVP_MD_CTX *evp_ctx, int cmd, int p1, void *p2)
{
KECCAK1600_CTX *ctx = evp_ctx->md_data;
switch (cmd) {
case EVP_MD_CTRL_XOF_LEN:
ctx->md_size = p1;
return 1;
default:
return 0;
}
}
static const EVP_MD sha1_md = {
NID_sha1,
NID_sha1WithRSAEncryption,
SHA_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
LEGACY_EVP_MD_METH_TABLE(sha1_init, sha1_update, sha1_final, sha1_int_ctrl,
SHA_CBLOCK),
};
const EVP_MD *EVP_sha1(void)
{
return &sha1_md;
}
static const EVP_MD sha224_md = {
NID_sha224,
NID_sha224WithRSAEncryption,
SHA224_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
LEGACY_EVP_MD_METH_TABLE(sha224_init, sha224_update, sha224_final, NULL,
SHA256_CBLOCK),
};
const EVP_MD *EVP_sha224(void)
{
return &sha224_md;
}
static const EVP_MD sha256_md = {
NID_sha256,
NID_sha256WithRSAEncryption,
SHA256_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
LEGACY_EVP_MD_METH_TABLE(sha256_init, sha256_update, sha256_final, NULL,
SHA256_CBLOCK),
};
const EVP_MD *EVP_sha256(void)
{
return &sha256_md;
}
static const EVP_MD sha512_224_md = {
NID_sha512_224,
NID_sha512_224WithRSAEncryption,
SHA224_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
LEGACY_EVP_MD_METH_TABLE(sha512_224_int_init, sha512_224_int_update,
sha512_224_int_final, NULL, SHA512_CBLOCK),
};
const EVP_MD *EVP_sha512_224(void)
{
return &sha512_224_md;
}
static const EVP_MD sha512_256_md = {
NID_sha512_256,
NID_sha512_256WithRSAEncryption,
SHA256_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
LEGACY_EVP_MD_METH_TABLE(sha512_256_int_init, sha512_256_int_update,
sha512_256_int_final, NULL, SHA512_CBLOCK),
};
const EVP_MD *EVP_sha512_256(void)
{
return &sha512_256_md;
}
static const EVP_MD sha384_md = {
NID_sha384,
NID_sha384WithRSAEncryption,
SHA384_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
LEGACY_EVP_MD_METH_TABLE(sha384_init, sha384_update, sha384_final, NULL,
SHA512_CBLOCK),
};
const EVP_MD *EVP_sha384(void)
{
return &sha384_md;
}
static const EVP_MD sha512_md = {
NID_sha512,
NID_sha512WithRSAEncryption,
SHA512_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
LEGACY_EVP_MD_METH_TABLE(sha512_init, sha512_update, sha512_final, NULL,
SHA512_CBLOCK),
};
const EVP_MD *EVP_sha512(void)
{
return &sha512_md;
}
#define EVP_MD_SHA3(bitlen) \
const EVP_MD *EVP_sha3_##bitlen(void) \
{ \
static const EVP_MD sha3_##bitlen##_md = { \
NID_sha3_##bitlen, \
NID_RSA_SHA3_##bitlen, \
bitlen / 8, \
EVP_MD_FLAG_DIGALGID_ABSENT, \
LEGACY_EVP_MD_METH_TABLE(sha3_int_init, sha3_int_update, \
sha3_int_final, NULL, \
(KECCAK1600_WIDTH - bitlen * 2) / 8), \
}; \
return &sha3_##bitlen##_md; \
}
#define EVP_MD_SHAKE(bitlen) \
const EVP_MD *EVP_shake##bitlen(void) \
{ \
static const EVP_MD shake##bitlen##_md = { \
NID_shake##bitlen, \
0, \
bitlen / 8, \
EVP_MD_FLAG_XOF, \
LEGACY_EVP_MD_METH_TABLE(shake_init, sha3_int_update, sha3_int_final, \
shake_ctrl, (KECCAK1600_WIDTH - bitlen * 2) / 8), \
}; \
return &shake##bitlen##_md; \
}
EVP_MD_SHA3(224)
EVP_MD_SHA3(256)
EVP_MD_SHA3(384)
EVP_MD_SHA3(512)
EVP_MD_SHAKE(128)
EVP_MD_SHAKE(256)
