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pki_crypto: Add pki_private_key_to_pem().

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This commit is contained in:
Andreas Schneider
2013-11-27 17:32:07 +01:00
parent 68c3c26029
commit 94969cf263
1 changed files with 118 additions and 0 deletions
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118
src/pki_crypto.c
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@@ -528,6 +528,124 @@ int pki_key_compare(const ssh_key k1,
return 0; return 0;
} }
ssh_string pki_private_key_to_pem(const ssh_key key,
const char *passphrase,
ssh_auth_callback auth_fn,
void *auth_data)
{
ssh_string blob;
BUF_MEM *buf;
BIO *mem;
int rc;
/* needed for openssl initialization */
if (ssh_init() < 0) {
return NULL;
}
mem = BIO_new(BIO_s_mem());
if (mem == NULL) {
return NULL;
}
switch (key->type) {
case SSH_KEYTYPE_DSS:
if (passphrase == NULL) {
struct pem_get_password_struct pgp = { auth_fn, auth_data };
rc = PEM_write_bio_DSAPrivateKey(mem,
key->dsa,
NULL, /* cipher */
NULL, /* kstr */
0, /* klen */
pem_get_password,
&pgp);
} else {
rc = PEM_write_bio_DSAPrivateKey(mem,
key->dsa,
NULL, /* cipher */
NULL, /* kstr */
0, /* klen */
NULL, /* auth_fn */
(void*) passphrase);
}
if (rc != 1) {
goto err;
}
break;
case SSH_KEYTYPE_RSA:
case SSH_KEYTYPE_RSA1:
if (passphrase == NULL) {
struct pem_get_password_struct pgp = { auth_fn, auth_data };
rc = PEM_write_bio_RSAPrivateKey(mem,
key->rsa,
NULL, /* cipher */
NULL, /* kstr */
0, /* klen */
pem_get_password,
&pgp);
} else {
rc = PEM_write_bio_RSAPrivateKey(mem,
key->rsa,
NULL, /* cipher */
NULL, /* kstr */
0, /* klen */
NULL, /* auth_fn */
(void*) passphrase);
}
if (rc != 1) {
goto err;
}
break;
case SSH_KEYTYPE_ECDSA:
#ifdef HAVE_ECC
if (passphrase == NULL) {
struct pem_get_password_struct pgp = { auth_fn, auth_data };
rc = PEM_write_bio_ECPrivateKey(mem,
key->ecdsa,
NULL, /* cipher */
NULL, /* kstr */
0, /* klen */
pem_get_password,
&pgp);
} else {
rc = PEM_write_bio_ECPrivateKey(mem,
key->ecdsa,
NULL, /* cipher */
NULL, /* kstr */
0, /* klen */
NULL, /* auth_fn */
(void*) passphrase);
}
if (rc != 1) {
goto err;
}
break;
#endif
case SSH_KEYTYPE_UNKNOWN:
BIO_free(mem);
ssh_pki_log("Unkown or invalid private key type %d", key->type);
return NULL;
}
BIO_get_mem_ptr(mem, &buf);
blob = ssh_string_new(buf->length);
if (blob == NULL) {
goto err;
}
ssh_string_fill(blob, buf->data, buf->length);
BIO_free(mem);
return blob;
err:
BIO_free(mem);
return NULL;
}
ssh_key pki_private_key_from_base64(const char *b64_key, ssh_key pki_private_key_from_base64(const char *b64_key,
const char *passphrase, const char *passphrase,
ssh_auth_callback auth_fn, ssh_auth_callback auth_fn,