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Diffstat (limited to 'crypto/dsa/dsa_asn1.c')
-rw-r--r--crypto/dsa/dsa_asn1.c243
1 files changed, 121 insertions, 122 deletions
diff --git a/crypto/dsa/dsa_asn1.c b/crypto/dsa/dsa_asn1.c
index 08d47720fa1e..88f924445a08 100644
--- a/crypto/dsa/dsa_asn1.c
+++ b/crypto/dsa/dsa_asn1.c
@@ -1,6 +1,7 @@
/* dsa_asn1.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2000.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2000.
*/
/* ====================================================================
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
@@ -10,7 +11,7 @@
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
@@ -64,29 +65,29 @@
#include <openssl/bn.h>
#include <openssl/rand.h>
#ifdef OPENSSL_FIPS
-#include <openssl/fips.h>
+# include <openssl/fips.h>
#endif
-
/* Override the default new methods */
static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- if(operation == ASN1_OP_NEW_PRE) {
- DSA_SIG *sig;
- sig = OPENSSL_malloc(sizeof(DSA_SIG));
- sig->r = NULL;
- sig->s = NULL;
- *pval = (ASN1_VALUE *)sig;
- if(sig) return 2;
- DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- return 1;
+ if (operation == ASN1_OP_NEW_PRE) {
+ DSA_SIG *sig;
+ sig = OPENSSL_malloc(sizeof(DSA_SIG));
+ sig->r = NULL;
+ sig->s = NULL;
+ *pval = (ASN1_VALUE *)sig;
+ if (sig)
+ return 2;
+ DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ return 1;
}
ASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = {
- ASN1_SIMPLE(DSA_SIG, r, CBIGNUM),
- ASN1_SIMPLE(DSA_SIG, s, CBIGNUM)
+ ASN1_SIMPLE(DSA_SIG, r, CBIGNUM),
+ ASN1_SIMPLE(DSA_SIG, s, CBIGNUM)
} ASN1_SEQUENCE_END_cb(DSA_SIG, DSA_SIG)
IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA_SIG,DSA_SIG,DSA_SIG)
@@ -94,139 +95,137 @@ IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA_SIG,DSA_SIG,DSA_SIG)
/* Override the default free and new methods */
static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- if(operation == ASN1_OP_NEW_PRE) {
- *pval = (ASN1_VALUE *)DSA_new();
- if(*pval) return 2;
- return 0;
- } else if(operation == ASN1_OP_FREE_PRE) {
- DSA_free((DSA *)*pval);
- *pval = NULL;
- return 2;
- }
- return 1;
+ if (operation == ASN1_OP_NEW_PRE) {
+ *pval = (ASN1_VALUE *)DSA_new();
+ if (*pval)
+ return 2;
+ return 0;
+ } else if (operation == ASN1_OP_FREE_PRE) {
+ DSA_free((DSA *)*pval);
+ *pval = NULL;
+ return 2;
+ }
+ return 1;
}
ASN1_SEQUENCE_cb(DSAPrivateKey, dsa_cb) = {
- ASN1_SIMPLE(DSA, version, LONG),
- ASN1_SIMPLE(DSA, p, BIGNUM),
- ASN1_SIMPLE(DSA, q, BIGNUM),
- ASN1_SIMPLE(DSA, g, BIGNUM),
- ASN1_SIMPLE(DSA, pub_key, BIGNUM),
- ASN1_SIMPLE(DSA, priv_key, BIGNUM)
+ ASN1_SIMPLE(DSA, version, LONG),
+ ASN1_SIMPLE(DSA, p, BIGNUM),
+ ASN1_SIMPLE(DSA, q, BIGNUM),
+ ASN1_SIMPLE(DSA, g, BIGNUM),
+ ASN1_SIMPLE(DSA, pub_key, BIGNUM),
+ ASN1_SIMPLE(DSA, priv_key, BIGNUM)
} ASN1_SEQUENCE_END_cb(DSA, DSAPrivateKey)
IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPrivateKey, DSAPrivateKey)
ASN1_SEQUENCE_cb(DSAparams, dsa_cb) = {
- ASN1_SIMPLE(DSA, p, BIGNUM),
- ASN1_SIMPLE(DSA, q, BIGNUM),
- ASN1_SIMPLE(DSA, g, BIGNUM),
+ ASN1_SIMPLE(DSA, p, BIGNUM),
+ ASN1_SIMPLE(DSA, q, BIGNUM),
+ ASN1_SIMPLE(DSA, g, BIGNUM),
} ASN1_SEQUENCE_END_cb(DSA, DSAparams)
IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams)
-/* DSA public key is a bit trickier... its effectively a CHOICE type
- * decided by a field called write_params which can either write out
- * just the public key as an INTEGER or the parameters and public key
- * in a SEQUENCE
+/*
+ * DSA public key is a bit trickier... its effectively a CHOICE type decided
+ * by a field called write_params which can either write out just the public
+ * key as an INTEGER or the parameters and public key in a SEQUENCE
*/
ASN1_SEQUENCE(dsa_pub_internal) = {
- ASN1_SIMPLE(DSA, pub_key, BIGNUM),
- ASN1_SIMPLE(DSA, p, BIGNUM),
- ASN1_SIMPLE(DSA, q, BIGNUM),
- ASN1_SIMPLE(DSA, g, BIGNUM)
+ ASN1_SIMPLE(DSA, pub_key, BIGNUM),
+ ASN1_SIMPLE(DSA, p, BIGNUM),
+ ASN1_SIMPLE(DSA, q, BIGNUM),
+ ASN1_SIMPLE(DSA, g, BIGNUM)
} ASN1_SEQUENCE_END_name(DSA, dsa_pub_internal)
ASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = {
- ASN1_SIMPLE(DSA, pub_key, BIGNUM),
- ASN1_EX_COMBINE(0, 0, dsa_pub_internal)
+ ASN1_SIMPLE(DSA, pub_key, BIGNUM),
+ ASN1_EX_COMBINE(0, 0, dsa_pub_internal)
} ASN1_CHOICE_END_cb(DSA, DSAPublicKey, write_params)
IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey)
-int DSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char *sig,
- unsigned int *siglen, DSA *dsa)
- {
- DSA_SIG *s;
+int DSA_sign(int type, const unsigned char *dgst, int dlen,
+ unsigned char *sig, unsigned int *siglen, DSA *dsa)
+{
+ DSA_SIG *s;
#ifdef OPENSSL_FIPS
- if(FIPS_mode() && !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW))
- {
- DSAerr(DSA_F_DSA_SIGN, DSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE);
- return 0;
- }
+ if (FIPS_mode() && !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW)) {
+ DSAerr(DSA_F_DSA_SIGN, DSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE);
+ return 0;
+ }
#endif
- RAND_seed(dgst, dlen);
- s=DSA_do_sign(dgst,dlen,dsa);
- if (s == NULL)
- {
- *siglen=0;
- return(0);
- }
- *siglen=i2d_DSA_SIG(s,&sig);
- DSA_SIG_free(s);
- return(1);
- }
+ RAND_seed(dgst, dlen);
+ s = DSA_do_sign(dgst, dlen, dsa);
+ if (s == NULL) {
+ *siglen = 0;
+ return (0);
+ }
+ *siglen = i2d_DSA_SIG(s, &sig);
+ DSA_SIG_free(s);
+ return (1);
+}
int DSA_size(const DSA *r)
- {
- int ret,i;
- ASN1_INTEGER bs;
- unsigned char buf[4]; /* 4 bytes looks really small.
- However, i2d_ASN1_INTEGER() will not look
- beyond the first byte, as long as the second
- parameter is NULL. */
-
- i=BN_num_bits(r->q);
- bs.length=(i+7)/8;
- bs.data=buf;
- bs.type=V_ASN1_INTEGER;
- /* If the top bit is set the asn1 encoding is 1 larger. */
- buf[0]=0xff;
-
- i=i2d_ASN1_INTEGER(&bs,NULL);
- i+=i; /* r and s */
- ret=ASN1_object_size(1,i,V_ASN1_SEQUENCE);
- return(ret);
- }
-
-/* data has already been hashed (probably with SHA or SHA-1). */
-/* returns
- * 1: correct signature
- * 0: incorrect signature
- * -1: error
+{
+ int ret, i;
+ ASN1_INTEGER bs;
+ unsigned char buf[4]; /* 4 bytes looks really small. However,
+ * i2d_ASN1_INTEGER() will not look beyond
+ * the first byte, as long as the second
+ * parameter is NULL. */
+
+ i = BN_num_bits(r->q);
+ bs.length = (i + 7) / 8;
+ bs.data = buf;
+ bs.type = V_ASN1_INTEGER;
+ /* If the top bit is set the asn1 encoding is 1 larger. */
+ buf[0] = 0xff;
+
+ i = i2d_ASN1_INTEGER(&bs, NULL);
+ i += i; /* r and s */
+ ret = ASN1_object_size(1, i, V_ASN1_SEQUENCE);
+ return (ret);
+}
+
+/*-
+ * data has already been hashed (probably with SHA or SHA-1). */
+/*
+ * returns 1: correct signature 0: incorrect signature -1: error
*/
int DSA_verify(int type, const unsigned char *dgst, int dgst_len,
- const unsigned char *sigbuf, int siglen, DSA *dsa)
- {
- DSA_SIG *s;
- const unsigned char *p = sigbuf;
- unsigned char *der = NULL;
- int derlen = -1;
- int ret=-1;
+ const unsigned char *sigbuf, int siglen, DSA *dsa)
+{
+ DSA_SIG *s;
+ const unsigned char *p = sigbuf;
+ unsigned char *der = NULL;
+ int derlen = -1;
+ int ret = -1;
#ifdef OPENSSL_FIPS
- if(FIPS_mode() && !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW))
- {
- DSAerr(DSA_F_DSA_VERIFY, DSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE);
- return 0;
- }
+ if (FIPS_mode() && !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW)) {
+ DSAerr(DSA_F_DSA_VERIFY, DSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE);
+ return 0;
+ }
#endif
- s = DSA_SIG_new();
- if (s == NULL) return(ret);
- if (d2i_DSA_SIG(&s,&p,siglen) == NULL) goto err;
- /* Ensure signature uses DER and doesn't have trailing garbage */
- derlen = i2d_DSA_SIG(s, &der);
- if (derlen != siglen || memcmp(sigbuf, der, derlen))
- goto err;
- ret=DSA_do_verify(dgst,dgst_len,s,dsa);
-err:
- if (derlen > 0)
- {
- OPENSSL_cleanse(der, derlen);
- OPENSSL_free(der);
- }
- DSA_SIG_free(s);
- return(ret);
- }
+ s = DSA_SIG_new();
+ if (s == NULL)
+ return (ret);
+ if (d2i_DSA_SIG(&s, &p, siglen) == NULL)
+ goto err;
+ /* Ensure signature uses DER and doesn't have trailing garbage */
+ derlen = i2d_DSA_SIG(s, &der);
+ if (derlen != siglen || memcmp(sigbuf, der, derlen))
+ goto err;
+ ret = DSA_do_verify(dgst, dgst_len, s, dsa);
+ err:
+ if (derlen > 0) {
+ OPENSSL_cleanse(der, derlen);
+ OPENSSL_free(der);
+ }
+ DSA_SIG_free(s);
+ return (ret);
+}
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