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PK sign/verify: hash=NULL is ok if md_alg=0 and hash_len=0

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This commit is contained in:
Gilles Peskine 2018-12-19 17:10:02 +01:00
parent 998fbfbe68
commit ee3cfec3cc
2 changed files with 82 additions and 3 deletions
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9
library/pk.c
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@ -240,7 +240,8 @@ int mbedtls_pk_verify_restartable( mbedtls_pk_context *ctx,
mbedtls_pk_restart_ctx *rs_ctx )
{
PK_VALIDATE_RET( ctx != NULL );
PK_VALIDATE_RET( hash != NULL );
PK_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && hash_len == 0 ) ||
hash != NULL );
PK_VALIDATE_RET( sig != NULL );
if( ctx->pk_info == NULL ||
@ -297,7 +298,8 @@ int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options,
const unsigned char *sig, size_t sig_len )
{
PK_VALIDATE_RET( ctx != NULL );
PK_VALIDATE_RET( hash != NULL );
PK_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && hash_len == 0 ) ||
hash != NULL );
PK_VALIDATE_RET( sig != NULL );
if( ctx->pk_info == NULL )
@ -361,7 +363,8 @@ int mbedtls_pk_sign_restartable( mbedtls_pk_context *ctx,
mbedtls_pk_restart_ctx *rs_ctx )
{
PK_VALIDATE_RET( ctx != NULL );
PK_VALIDATE_RET( hash != NULL );
PK_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && hash_len == 0 ) ||
hash != NULL );
PK_VALIDATE_RET( sig != NULL );
if( ctx->pk_info == NULL ||