/*
* Exim - an Internet mail transport agent
*
- * Copyright (C) 2016 Exim maintainers
- * Copyright (c) University of Cambridge 1995 - 2016
+ * Copyright (C) 2010 - 2018 Exim maintainers
+ * Copyright (c) University of Cambridge 1995 - 2009
*
* Hash interface functions
*/
sha1;
#endif /*STAND_ALONE*/
-
-
-#ifndef SUPPORT_TLS
-# error Need SUPPORT_TLS for DKIM
-#endif
-
-
-
-#ifdef notdef
-#ifdef RSA_OPENSSL
-# include <openssl/rsa.h>
-# include <openssl/ssl.h>
-# include <openssl/err.h>
-#elif defined(RSA_GNUTLS)
-# include <gnutls/gnutls.h>
-# include <gnutls/x509.h>
-# ifdef RSA_VERIFY_GNUTLS
-# include <gnutls/abstract.h>
-# endif
-#endif
-#endif
-
+#include <assert.h>
/******************************************************************************/
#ifdef SHA_OPENSSL
-void
+BOOL
exim_sha_init(hctx * h, hashmethod m)
{
+/*XXX extend for sha512 */
switch (h->method = m)
{
- case HASH_SHA1: h->hashlen = 20; SHA1_Init (&h->u.sha1); break;
- case HASH_SHA256: h->hashlen = 32; SHA256_Init(&h->u.sha2); break;
- default: h->hashlen = 0; break;
+ case HASH_SHA1: h->hashlen = 20; SHA1_Init (&h->u.sha1); break;
+ case HASH_SHA2_256: h->hashlen = 32; SHA256_Init(&h->u.sha2_256); break;
+ case HASH_SHA2_384: h->hashlen = 48; SHA384_Init(&h->u.sha2_512); break;
+ case HASH_SHA2_512: h->hashlen = 64; SHA512_Init(&h->u.sha2_512); break;
+#ifdef EXIM_HAVE_SHA3
+ case HASH_SHA3_224: h->hashlen = 28;
+ EVP_DigestInit(h->u.mctx = EVP_MD_CTX_new(), EVP_sha3_224());
+ break;
+ case HASH_SHA3_256: h->hashlen = 32;
+ EVP_DigestInit(h->u.mctx = EVP_MD_CTX_new(), EVP_sha3_256());
+ break;
+ case HASH_SHA3_384: h->hashlen = 48;
+ EVP_DigestInit(h->u.mctx = EVP_MD_CTX_new(), EVP_sha3_384());
+ break;
+ case HASH_SHA3_512: h->hashlen = 64;
+ EVP_DigestInit(h->u.mctx = EVP_MD_CTX_new(), EVP_sha3_512());
+ break;
+#endif
+ default: h->hashlen = 0; return FALSE;
}
+return TRUE;
}
{
switch (h->method)
{
- case HASH_SHA1: SHA1_Update (&h->u.sha1, data, len); break;
- case HASH_SHA256: SHA256_Update(&h->u.sha2, data, len); break;
+ case HASH_SHA1: SHA1_Update (&h->u.sha1, data, len); break;
+ case HASH_SHA2_256: SHA256_Update(&h->u.sha2_256, data, len); break;
+ case HASH_SHA2_384: SHA384_Update(&h->u.sha2_512, data, len); break;
+ case HASH_SHA2_512: SHA512_Update(&h->u.sha2_512, data, len); break;
+#ifdef EXIM_HAVE_SHA3
+ case HASH_SHA3_224:
+ case HASH_SHA3_256:
+ case HASH_SHA3_384:
+ case HASH_SHA3_512: EVP_DigestUpdate(h->u.mctx, data, len); break;
+#endif
+ /* should be blocked by init not handling these, but be explicit to
+ guard against accidents later (and hush up clang -Wswitch) */
+ default: assert(0);
}
}
b->data = store_get(b->len = h->hashlen);
switch (h->method)
{
- case HASH_SHA1: SHA1_Final (b->data, &h->u.sha1); break;
- case HASH_SHA256: SHA256_Final(b->data, &h->u.sha2); break;
+ case HASH_SHA1: SHA1_Final (b->data, &h->u.sha1); break;
+ case HASH_SHA2_256: SHA256_Final(b->data, &h->u.sha2_256); break;
+ case HASH_SHA2_384: SHA384_Final(b->data, &h->u.sha2_512); break;
+ case HASH_SHA2_512: SHA512_Final(b->data, &h->u.sha2_512); break;
+#ifdef EXIM_HAVE_SHA3
+ case HASH_SHA3_224:
+ case HASH_SHA3_256:
+ case HASH_SHA3_384:
+ case HASH_SHA3_512: EVP_DigestFinal(h->u.mctx, b->data, NULL); break;
+#endif
+ default: assert(0);
}
}
#elif defined(SHA_GNUTLS)
/******************************************************************************/
-void
+BOOL
exim_sha_init(hctx * h, hashmethod m)
{
+/*XXX extend for sha512 */
switch (h->method = m)
{
- case HASH_SHA1: h->hashlen = 20; gnutls_hash_init(&h->sha, GNUTLS_DIG_SHA1); break;
- case HASH_SHA256: h->hashlen = 32; gnutls_hash_init(&h->sha, GNUTLS_DIG_SHA256); break;
- default: h->hashlen = 0; break;
+ case HASH_SHA1: h->hashlen = 20; gnutls_hash_init(&h->sha, GNUTLS_DIG_SHA1); break;
+ case HASH_SHA2_256: h->hashlen = 32; gnutls_hash_init(&h->sha, GNUTLS_DIG_SHA256); break;
+ case HASH_SHA2_384: h->hashlen = 48; gnutls_hash_init(&h->sha, GNUTLS_DIG_SHA384); break;
+ case HASH_SHA2_512: h->hashlen = 64; gnutls_hash_init(&h->sha, GNUTLS_DIG_SHA512); break;
+#ifdef EXIM_HAVE_SHA3
+ case HASH_SHA3_224: h->hashlen = 28; gnutls_hash_init(&h->sha, GNUTLS_DIG_SHA3_224); break;
+ case HASH_SHA3_256: h->hashlen = 32; gnutls_hash_init(&h->sha, GNUTLS_DIG_SHA3_256); break;
+ case HASH_SHA3_384: h->hashlen = 48; gnutls_hash_init(&h->sha, GNUTLS_DIG_SHA3_384); break;
+ case HASH_SHA3_512: h->hashlen = 64; gnutls_hash_init(&h->sha, GNUTLS_DIG_SHA3_512); break;
+#endif
+ default: h->hashlen = 0; return FALSE;
}
+return TRUE;
}
#elif defined(SHA_GCRYPT)
/******************************************************************************/
-void
+BOOL
exim_sha_init(hctx * h, hashmethod m)
{
+/*XXX extend for sha512 */
switch (h->method = m)
{
- case HASH_SHA1: h->hashlen = 20; gcry_md_open(&h->sha, GCRY_MD_SHA1, 0); break;
- case HASH_SHA256: h->hashlen = 32; gcry_md_open(&h->sha, GCRY_MD_SHA256, 0); break;
- default: h->hashlen = 0; break;
+ case HASH_SHA1: h->hashlen = 20; gcry_md_open(&h->sha, GCRY_MD_SHA1, 0); break;
+ case HASH_SHA2_256: h->hashlen = 32; gcry_md_open(&h->sha, GCRY_MD_SHA256, 0); break;
+ case HASH_SHA2_384: h->hashlen = 48; gcry_md_open(&h->sha, GCRY_MD_SHA384, 0); break;
+ case HASH_SHA2_512: h->hashlen = 64; gcry_md_open(&h->sha, GCRY_MD_SHA512, 0); break;
+ case HASH_SHA3_256: h->hashlen = 32; gcry_md_open(&h->sha, GCRY_MD_SHA3_256, 0); break;
+ case HASH_SHA3_384: h->hashlen = 48; gcry_md_open(&h->sha, GCRY_MD_SHA3_384, 0); break;
+ case HASH_SHA3_512: h->hashlen = 64; gcry_md_open(&h->sha, GCRY_MD_SHA3_512, 0); break;
+ default: h->hashlen = 0; return FALSE;
}
+return TRUE;
}
#elif defined(SHA_POLARSSL)
/******************************************************************************/
-void
+BOOL
exim_sha_init(hctx * h, hashmethod m)
{
+/*XXX extend for sha512 */
switch (h->method = m)
{
case HASH_SHA1: h->hashlen = 20; sha1_starts(&h->u.sha1); break;
- case HASH_SHA256: h->hashlen = 32; sha2_starts(&h->u.sha2, 0); break;
- default: h->hashlen = 0; break;
+ case HASH_SHA2_256: h->hashlen = 32; sha2_starts(&h->u.sha2, 0); break;
+ default: h->hashlen = 0; return FALSE;
}
+return TRUE;
}
switch (h->method)
{
case HASH_SHA1: sha1_update(h->u.sha1, US data, len); break;
- case HASH_SHA256: sha2_update(h->u.sha2, US data, len); break;
+ case HASH_SHA2_256: sha2_update(h->u.sha2, US data, len); break;
}
}
switch (h->method)
{
case HASH_SHA1: sha1_finish(h->u.sha1, b->data); break;
- case HASH_SHA256: sha2_finish(h->u.sha2, b->data); break;
+ case HASH_SHA2_256: sha2_finish(h->u.sha2, b->data); break;
}
}
static void
native_sha1_mid(sha1 *base, const uschar *text)
{
-int i;
uint A, B, C, D, E;
uint W[80];
base->length += 64;
-for (i = 0; i < 16; i++)
+for (int i = 0; i < 16; i++)
{
W[i] = ((uint)text[0] << 24) | (text[1] << 16) | (text[2] << 8) | text[3];
text += 4;
}
-for (i = 16; i < 80; i++)
+for (int i = 16; i < 80; i++)
{
register unsigned int x = W[i-3] ^ W[i-8] ^ W[i-14] ^ W[i-16];
W[i] = (x << 1) | (x >> 31);
D = base->H[3];
E = base->H[4];
-for (i = 0; i < 20; i++)
+for (int i = 0; i < 20; i++)
{
unsigned int T;
T = ((A << 5) | (A >> 27)) + ((B & C) | ((~B) & D)) + E + W[i] + 0x5a827999;
A = T;
}
-for (i = 20; i < 40; i++)
+for (int i = 20; i < 40; i++)
{
unsigned int T;
T = ((A << 5) | (A >> 27)) + (B ^ C ^ D) + E + W[i] + 0x6ed9eba1;
A = T;
}
-for (i = 40; i < 60; i++)
+for (int i = 40; i < 60; i++)
{
unsigned int T;
T = ((A << 5) | (A >> 27)) + ((B & C) | (B & D) | (C & D)) + E + W[i] +
A = T;
}
-for (i = 60; i < 80; i++)
+for (int i = 60; i < 80; i++)
{
unsigned int T;
T = ((A << 5) | (A >> 27)) + (B ^ C ^ D) + E + W[i] + 0xca62c1d6;
static void
native_sha1_end(sha1 *base, const uschar *text, int length, uschar *digest)
{
-int i;
uschar work[64];
/* Process in chunks of 64 until we have less than 64 bytes left. */
/* Pass back the result, high-order byte first in each word. */
-for (i = 0; i < 5; i++)
+for (int i = 0; i < 5; i++)
{
register int x = base->H[i];
*digest++ = (x >> 24) & 0xff;
# ifdef notdef
-void
+BOOL
exim_sha_init(hctx * h, hashmethod m)
{
h->hashlen = 20;
native_sha1_start(&h->sha1);
+return TRUE;
}
#endif
-/******************************************************************************/
-
-/* Common to all library versions */
-int
-exim_sha_hashlen(hctx * h)
-{
-return h->method == HASH_SHA1 ? 20
- : h->method == HASH_SHA256 ? 32
- : 0;
-}
/******************************************************************************/
void
sha1_start(hctx * h)
{
-exim_sha_init(h, HASH_SHA1);
+(void) exim_sha_init(h, HASH_SHA1);
}
void
sha1 base;
int j;
int i = 0x01020304;
-uschar *ctest = (uschar *)(&i);
+uschar *ctest = US (&i);
uschar buffer[256];
uschar digest[20];
uschar s[41];