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/*
* Copyright (C) 2012 Tobias Brunner
* Copyright (C) 2005-2006 Martin Willi
* Copyright (C) 2005 Jan Hutter
* Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "hasher.h"
#include <asn1/oid.h>
ENUM(hash_algorithm_names, HASH_UNKNOWN, HASH_SHA512,
"HASH_UNKNOWN",
"HASH_MD2",
"HASH_MD4",
"HASH_MD5",
"HASH_SHA1",
"HASH_SHA224",
"HASH_SHA256",
"HASH_SHA384",
"HASH_SHA512"
);
ENUM(hash_algorithm_short_names, HASH_UNKNOWN, HASH_SHA512,
"unknown",
"md2",
"md4",
"md5",
"sha1",
"sha224",
"sha256",
"sha384",
"sha512"
);
/*
* Described in header.
*/
hash_algorithm_t hasher_algorithm_from_oid(int oid)
{
switch (oid)
{
case OID_MD2:
case OID_MD2_WITH_RSA:
return HASH_MD2;
case OID_MD5:
case OID_MD5_WITH_RSA:
return HASH_MD5;
case OID_SHA1:
case OID_SHA1_WITH_RSA:
return HASH_SHA1;
case OID_SHA224:
case OID_SHA224_WITH_RSA:
return HASH_SHA224;
case OID_SHA256:
case OID_SHA256_WITH_RSA:
return HASH_SHA256;
case OID_SHA384:
case OID_SHA384_WITH_RSA:
return HASH_SHA384;
case OID_SHA512:
case OID_SHA512_WITH_RSA:
return HASH_SHA512;
default:
return HASH_UNKNOWN;
}
}
/*
* Described in header.
*/
hash_algorithm_t hasher_algorithm_from_prf(pseudo_random_function_t alg)
{
switch (alg)
{
case PRF_HMAC_MD5:
return HASH_MD5;
case PRF_HMAC_SHA1:
case PRF_FIPS_SHA1_160:
case PRF_KEYED_SHA1:
return HASH_SHA1;
case PRF_HMAC_SHA2_256:
return HASH_SHA256;
case PRF_HMAC_SHA2_384:
return HASH_SHA384;
case PRF_HMAC_SHA2_512:
return HASH_SHA512;
case PRF_HMAC_TIGER:
case PRF_AES128_XCBC:
case PRF_AES128_CMAC:
case PRF_FIPS_DES:
case PRF_CAMELLIA128_XCBC:
case PRF_UNDEFINED:
break;
}
return HASH_UNKNOWN;
}
/*
* Described in header.
*/
hash_algorithm_t hasher_algorithm_from_integrity(integrity_algorithm_t alg,
size_t *length)
{
if (length)
{
switch (alg)
{
case AUTH_HMAC_MD5_96:
case AUTH_HMAC_SHA1_96:
case AUTH_HMAC_SHA2_256_96:
*length = 12;
break;
case AUTH_HMAC_MD5_128:
case AUTH_HMAC_SHA1_128:
case AUTH_HMAC_SHA2_256_128:
*length = 16;
break;
case AUTH_HMAC_SHA1_160:
*length = 20;
break;
case AUTH_HMAC_SHA2_384_192:
*length = 24;
break;
case AUTH_HMAC_SHA2_256_256:
case AUTH_HMAC_SHA2_512_256:
*length = 32;
break;
case AUTH_HMAC_SHA2_384_384:
*length = 48;
break;
case AUTH_HMAC_SHA2_512_512:
*length = 64;
break;
default:
break;
}
}
switch (alg)
{
case AUTH_HMAC_MD5_96:
case AUTH_HMAC_MD5_128:
case AUTH_KPDK_MD5:
return HASH_MD5;
case AUTH_HMAC_SHA1_96:
case AUTH_HMAC_SHA1_128:
case AUTH_HMAC_SHA1_160:
return HASH_SHA1;
case AUTH_HMAC_SHA2_256_96:
case AUTH_HMAC_SHA2_256_128:
case AUTH_HMAC_SHA2_256_256:
return HASH_SHA256;
case AUTH_HMAC_SHA2_384_192:
case AUTH_HMAC_SHA2_384_384:
return HASH_SHA384;
case AUTH_HMAC_SHA2_512_256:
case AUTH_HMAC_SHA2_512_512:
return HASH_SHA512;
case AUTH_AES_CMAC_96:
case AUTH_AES_128_GMAC:
case AUTH_AES_192_GMAC:
case AUTH_AES_256_GMAC:
case AUTH_AES_XCBC_96:
case AUTH_DES_MAC:
case AUTH_CAMELLIA_XCBC_96:
case AUTH_UNDEFINED:
break;
}
return HASH_UNKNOWN;
}
/*
* Described in header.
*/
integrity_algorithm_t hasher_algorithm_to_integrity(hash_algorithm_t alg,
size_t length)
{
switch (alg)
{
case HASH_MD5:
switch (length)
{
case 12:
return AUTH_HMAC_MD5_96;
case 16:
return AUTH_HMAC_MD5_128;
}
break;
case HASH_SHA1:
switch (length)
{
case 12:
return AUTH_HMAC_SHA1_96;
case 16:
return AUTH_HMAC_SHA1_128;
case 20:
return AUTH_HMAC_SHA1_160;
}
break;
case HASH_SHA256:
switch (length)
{
case 12:
return AUTH_HMAC_SHA2_256_96;
case 16:
return AUTH_HMAC_SHA2_256_128;
case 32:
return AUTH_HMAC_SHA2_256_256;
}
break;
case HASH_SHA384:
switch (length)
{
case 24:
return AUTH_HMAC_SHA2_384_192;
case 48:
return AUTH_HMAC_SHA2_384_384;
}
break;
case HASH_SHA512:
switch (length)
{
case 32:
return AUTH_HMAC_SHA2_512_256;
case 64:
return AUTH_HMAC_SHA2_512_512;
}
break;
case HASH_MD2:
case HASH_MD4:
case HASH_SHA224:
case HASH_UNKNOWN:
break;
}
return AUTH_UNDEFINED;
}
/*
* Described in header.
*/
int hasher_algorithm_to_oid(hash_algorithm_t alg)
{
int oid;
switch (alg)
{
case HASH_MD2:
oid = OID_MD2;
break;
case HASH_MD5:
oid = OID_MD5;
break;
case HASH_SHA1:
oid = OID_SHA1;
break;
case HASH_SHA224:
oid = OID_SHA224;
break;
case HASH_SHA256:
oid = OID_SHA256;
break;
case HASH_SHA384:
oid = OID_SHA384;
break;
case HASH_SHA512:
oid = OID_SHA512;
break;
default:
oid = OID_UNKNOWN;
}
return oid;
}
/*
* Described in header.
*/
int hasher_signature_algorithm_to_oid(hash_algorithm_t alg, key_type_t key)
{
switch (key)
{
case KEY_RSA:
switch (alg)
{
case HASH_MD2:
return OID_MD2_WITH_RSA;
case HASH_MD5:
return OID_MD5_WITH_RSA;
case HASH_SHA1:
return OID_SHA1_WITH_RSA;
case HASH_SHA224:
return OID_SHA224_WITH_RSA;
case HASH_SHA256:
return OID_SHA256_WITH_RSA;
case HASH_SHA384:
return OID_SHA384_WITH_RSA;
case HASH_SHA512:
return OID_SHA512_WITH_RSA;
default:
return OID_UNKNOWN;
}
case KEY_ECDSA:
switch (alg)
{
case HASH_SHA1:
return OID_ECDSA_WITH_SHA1;
case HASH_SHA256:
return OID_ECDSA_WITH_SHA256;
case HASH_SHA384:
return OID_ECDSA_WITH_SHA384;
case HASH_SHA512:
return OID_ECDSA_WITH_SHA512;
default:
return OID_UNKNOWN;
}
default:
return OID_UNKNOWN;
}
}
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