md5_sha1.h File Reference

Hybrid MD5+SHA1 hash as used by TLSv1.1 and earlier. More...

#include <stdint.h>
#include <ipxe/crypto.h>
#include <ipxe/md5.h>
#include <ipxe/sha1.h>

Go to the source code of this file.

Data Structures
struct	md5_sha1_context
	An MD5+SHA1 context. More...
struct	md5_sha1_digest
	An MD5+SHA1 digest. More...
union	md5_sha1_block
	An MD5+SHA1 data block. More...
struct	md5_sha1_hmac_keys
	An MD5+SHA1 HMAC key block. More...

Macros
#define	MD5_SHA1_CTX_SIZE   sizeof ( struct md5_sha1_context )
	MD5+SHA1 context size.
#define	MD5_SHA1_DIGEST_SIZE   sizeof ( struct md5_sha1_digest )
	MD5+SHA1 digest size.
#define	MD5_SHA1_BLOCK_SIZE   sizeof ( union md5_sha1_block )
	MD5+SHA1 block size.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	FILE_SECBOOT (PERMITTED)
static int	is_md5_sha1 (struct digest_algorithm *digest)
	Check if a digest algorithm is MD5+SHA1.

Variables
char	md5_sha1_sentinel [1]
	Sentinel used to avoid explicit symbol references.
struct digest_algorithm	md5_sha1_algorithm
	Hybrid MD5+SHA1 digest algorithm.

Detailed Description

Hybrid MD5+SHA1 hash as used by TLSv1.1 and earlier.

Definition in file md5_sha1.h.

Macro Definition Documentation

MD5_SHA1_CTX_SIZE

#define MD5_SHA1_CTX_SIZE   sizeof ( struct md5_sha1_context )

MD5+SHA1 context size.

Definition at line 27 of file md5_sha1.h.

MD5_SHA1_DIGEST_SIZE

#define MD5_SHA1_DIGEST_SIZE   sizeof ( struct md5_sha1_digest )

MD5+SHA1 digest size.

Definition at line 38 of file md5_sha1.h.

MD5_SHA1_BLOCK_SIZE

#define MD5_SHA1_BLOCK_SIZE   sizeof ( union md5_sha1_block )

MD5+SHA1 block size.

Definition at line 49 of file md5_sha1.h.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

FILE_SECBOOT()

FILE_SECBOOT

(

PERMITTED

)

is_md5_sha1()

int is_md5_sha1 ( struct digest_algorithm * digest )

inlinestatic

Check if a digest algorithm is MD5+SHA1.

Parameters

digest	Digest algorithm
is_md5_sha1	Digest algorithm is MD5+SHA1

Definition at line 74 of file md5_sha1.h.

                                                {
 
        /* The MD5+SHA1 algorithm is hardcoded into various parts of
         * the TLS specifications prior to TLSv1.2, which has knock-on
         * effects on non-TLS code such as the RSA algorithm (which
         * needs to be able to identify the PKCS#1 digestInfo prefix).
         *
         * Allow a digest algorithm to be tested to see if it is the
         * MD5+SHA1 algorithm without creating an explicit symbol
         * reference that will drag the algorithm into a build that
         * otherwise does not need it.
         */
        return ( digest->priv == md5_sha1_sentinel );
}

References md5_sha1_sentinel, and digest_algorithm::priv.

Referenced by rsa_pkcs1_encode().

Variable Documentation

md5_sha1_sentinel

char md5_sha1_sentinel[1]

extern

Sentinel used to avoid explicit symbol references.

Definition at line 38 of file md5_sha1.c.

Referenced by is_md5_sha1().

md5_sha1_algorithm

struct digest_algorithm md5_sha1_algorithm

extern

Hybrid MD5+SHA1 digest algorithm.

Definition at line 87 of file md5_sha1.c.

                                           {
        .name           = "md5+sha1",
        .ctxsize        = sizeof ( struct md5_sha1_context ),
        .blocksize      = sizeof ( union md5_sha1_block ),
        .digestsize     = sizeof ( struct md5_sha1_digest ),
        .init           = md5_sha1_init,
        .update         = md5_sha1_update,
        .final          = md5_sha1_final,
        .priv           = md5_sha1_sentinel,
};

Referenced by dummy_md5_sha1(), tls_select_cipher(), tls_send_certificate_verify(), tls_verify_signature(), tlskey_md5_sha1_apply(), tlskey_md5_sha1_expand(), tlskey_md5_sha1_save(), and tlskey_md5_sha1_secretsize().