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Implement i2d_RSAPublicKey

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@16973 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2006-04-03 05:17:30 +00:00
parent b93187f3c7
commit 49cd3f86ca
1 changed files with 45 additions and 0 deletions
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45
lib/des/rsa.c
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@@ -301,6 +301,20 @@ heim_int2BN(const heim_integer *i)
return bn; return bn;
} }
static krb5_error_code
bn2heim_int(BIGNUM *bn, heim_integer *integer)
{
integer->length = BN_num_bytes(bn);
integer->data = malloc(integer->length);
if (integer->data == NULL) {
integer->length = 0;
return ENOMEM;
}
BN_bn2bin(bn, integer->data);
integer->negative = BN_is_negative(bn);
return 0;
}
RSA * RSA *
d2i_RSAPrivateKey(RSA *rsa, const unsigned char **pp, size_t len) d2i_RSAPrivateKey(RSA *rsa, const unsigned char **pp, size_t len)
@@ -335,3 +349,34 @@ d2i_RSAPrivateKey(RSA *rsa, const unsigned char **pp, size_t len)
free_RSAPrivateKey(&data); free_RSAPrivateKey(&data);
return k; return k;
} }
int
i2d_RSAPublicKey(RSA *rsa, const unsigned char **pp)
{
size_t size;
int ret;
ret = bn2heim_int(rsa->n, &data.modulus);
ret = bn2heim_int(rsa->n, &data.e);
if (pp == NULL) {
size = length_RSAPublicKey(&data);
} else {
RSAPublicKey data;
void *p;
size_t len;
ASN1_MALLOC_ENCODE(RSAPublicKey, p, len, &data, &size, ret);
free_RSAPublicKey(&data);
if (ret)
return -1;
if (len != size)
abort();
memcpy(*pp, p, size);
*pp += size;
}
return size;
}