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add separate PSS decode function, rename PSS parameters to RSA_PSS_PARAMS

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This commit is contained in:
Dr. Stephen Henson 2010-03-07 13:34:51 +00:00
parent 77f4b6ba4f
commit 63b825c9d4
3 changed files with 63 additions and 32 deletions
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7
crypto/rsa/rsa.h
View File

@ -241,6 +241,7 @@ struct rsa_st
#define EVP_PKEY_CTRL_RSA_KEYGEN_BITS (EVP_PKEY_ALG_CTRL + 3)
#define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 4)
#define EVP_PKEY_CTRL_MGF1_MD (EVP_PKEY_ALG_CTRL + 5)
#define RSA_PKCS1_PADDING 1
#define RSA_SSLV23_PADDING 2
@ -300,15 +301,15 @@ const RSA_METHOD *RSA_null_method(void);
DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPublicKey)
DECLARE_ASN1_ENCODE_FUNCTIONS_const(RSA, RSAPrivateKey)
typedef struct rsassaPssParams_st
typedef struct rsa_pss_params_st
{
X509_ALGOR *hashAlgorithm;
X509_ALGOR *maskGenAlgorithm;
ASN1_INTEGER *saltLength;
ASN1_INTEGER *trailerField;
} RSASSA_PSS_PARAMS;
} RSA_PSS_PARAMS;
DECLARE_ASN1_FUNCTIONS(RSASSA_PSS_PARAMS)
DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
#ifndef OPENSSL_NO_FP_API
int RSA_print_fp(FILE *fp, const RSA *r,int offset);

74
crypto/rsa/rsa_ameth.c
View File

@ -265,14 +265,48 @@ static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
}
static int rsa_pss_param_print(BIO *bp, RSASSA_PSS_PARAMS *pss, int indent)
static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg,
X509_ALGOR **pmaskHash)
{
const unsigned char *p;
int plen;
RSA_PSS_PARAMS *pss;
*pmaskHash = NULL;
if (!alg->parameter || alg->parameter->type != V_ASN1_SEQUENCE)
return NULL;
p = alg->parameter->value.sequence->data;
plen = alg->parameter->value.sequence->length;
pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen);
if (!pss)
return NULL;
if (pss->maskGenAlgorithm)
{
ASN1_TYPE *param = pss->maskGenAlgorithm->parameter;
if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) == NID_mgf1
&& param->type == V_ASN1_SEQUENCE)
{
p = param->value.sequence->data;
plen = param->value.sequence->length;
*pmaskHash = d2i_X509_ALGOR(NULL, &p, plen);
}
}
return pss;
}
static int rsa_pss_param_print(BIO *bp, RSA_PSS_PARAMS *pss,
X509_ALGOR *maskHash, int indent)
{
int rv = 0;
X509_ALGOR *maskHash = NULL;
if (!pss)
{
if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0)
return 0;
return 1;
}
if (BIO_puts(bp, "\n") <= 0)
goto err;
@ -299,18 +333,16 @@ static int rsa_pss_param_print(BIO *bp, RSASSA_PSS_PARAMS *pss, int indent)
goto err;
if (pss->maskGenAlgorithm)
{
ASN1_TYPE *param = pss->maskGenAlgorithm->parameter;
if (param->type == V_ASN1_SEQUENCE)
{
const unsigned char *p = param->value.sequence->data;
int plen = param->value.sequence->length;
maskHash = d2i_X509_ALGOR(NULL, &p, plen);
}
if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0)
goto err;
if (BIO_puts(bp, " with ") <= 0)
goto err;
if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0)
if (maskHash)
{
if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0)
goto err;
}
else if (BIO_puts(bp, "INVALID") <= 0)
goto err;
}
else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0)
@ -346,9 +378,6 @@ static int rsa_pss_param_print(BIO *bp, RSASSA_PSS_PARAMS *pss, int indent)
rv = 1;
err:
if (maskHash)
X509_ALGOR_free(maskHash);
RSASSA_PSS_PARAMS_free(pss);
return rv;
}
@ -359,15 +388,16 @@ static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg,
{
if (OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss)
{
RSASSA_PSS_PARAMS *pss = NULL;
ASN1_TYPE *param = sigalg->parameter;
if (param && param->type == V_ASN1_SEQUENCE)
{
const unsigned char *p = param->value.sequence->data;
int plen = param->value.sequence->length;
pss = d2i_RSASSA_PSS_PARAMS(NULL, &p, plen);
}
if (!rsa_pss_param_print(bp, pss, indent))
int rv;
RSA_PSS_PARAMS *pss;
X509_ALGOR *maskHash;
pss = rsa_pss_decode(sigalg, &maskHash);
rv = rsa_pss_param_print(bp, pss, maskHash, indent);
if (pss)
RSA_PSS_PARAMS_free(pss);
if (maskHash)
X509_ALGOR_free(maskHash);
if (!rv)
return 0;
}

14
crypto/rsa/rsa_asn1.c
View File

@ -97,14 +97,14 @@ ASN1_SEQUENCE_cb(RSAPublicKey, rsa_cb) = {
ASN1_SIMPLE(RSA, e, BIGNUM),
} ASN1_SEQUENCE_END_cb(RSA, RSAPublicKey)
ASN1_SEQUENCE(RSASSA_PSS_PARAMS) = {
ASN1_EXP_OPT(RSASSA_PSS_PARAMS, hashAlgorithm, X509_ALGOR,0),
ASN1_EXP_OPT(RSASSA_PSS_PARAMS, maskGenAlgorithm, X509_ALGOR,1),
ASN1_EXP_OPT(RSASSA_PSS_PARAMS, saltLength, ASN1_INTEGER,2),
ASN1_EXP_OPT(RSASSA_PSS_PARAMS, trailerField, ASN1_INTEGER,3)
} ASN1_SEQUENCE_END(RSASSA_PSS_PARAMS)
ASN1_SEQUENCE(RSA_PSS_PARAMS) = {
ASN1_EXP_OPT(RSA_PSS_PARAMS, hashAlgorithm, X509_ALGOR,0),
ASN1_EXP_OPT(RSA_PSS_PARAMS, maskGenAlgorithm, X509_ALGOR,1),
ASN1_EXP_OPT(RSA_PSS_PARAMS, saltLength, ASN1_INTEGER,2),
ASN1_EXP_OPT(RSA_PSS_PARAMS, trailerField, ASN1_INTEGER,3)
} ASN1_SEQUENCE_END(RSA_PSS_PARAMS)
IMPLEMENT_ASN1_FUNCTIONS(RSASSA_PSS_PARAMS)
IMPLEMENT_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(RSA, RSAPrivateKey, RSAPrivateKey)