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Add kernel skcipher backend.

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This commit is contained in:
Milan Broz
2012-11-07 16:22:23 +01:00
parent a14a2137e7
commit 7199662fbb
4 changed files with 209 additions and 29 deletions
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33
lib/crypto_backend/crypto_kernel.c
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@@ -65,31 +65,8 @@ struct crypt_hmac {
int hash_len;
};
static int _socket_init(struct sockaddr_alg *sa, int *tfmfd, int *opfd)
{
*tfmfd = socket(AF_ALG, SOCK_SEQPACKET, 0);
if (*tfmfd == -1)
goto bad;
if (bind(*tfmfd, (struct sockaddr *)sa, sizeof(*sa)) == -1)
goto bad;
*opfd = accept(*tfmfd, NULL, 0);
if (*opfd == -1)
goto bad;
return 0;
bad:
if (*tfmfd != -1) {
close(*tfmfd);
*tfmfd = -1;
}
if (*opfd != -1) {
close(*opfd);
*opfd = -1;
}
return -EINVAL;
}
/* Defined in crypt_kernel_ciphers.c */
extern int crypt_kernel_socket_init(struct sockaddr_alg *sa, int *tfmfd, int *opfd);
int crypt_backend_init(struct crypt_device *ctx)
{
@@ -107,7 +84,7 @@ int crypt_backend_init(struct crypt_device *ctx)
if (uname(&uts) == -1 || strcmp(uts.sysname, "Linux"))
return -EINVAL;
if (_socket_init(&sa, &tfmfd, &opfd) < 0)
if (crypt_kernel_socket_init(&sa, &tfmfd, &opfd) < 0)
return -EINVAL;
close(tfmfd);
@@ -172,7 +149,7 @@ int crypt_hash_init(struct crypt_hash **ctx, const char *name)
strncpy((char *)sa.salg_name, ha->kernel_name, sizeof(sa.salg_name));
if (_socket_init(&sa, &h->tfmfd, &h->opfd) < 0) {
if (crypt_kernel_socket_init(&sa, &h->tfmfd, &h->opfd) < 0) {
free(h);
return -EINVAL;
}
@@ -247,7 +224,7 @@ int crypt_hmac_init(struct crypt_hmac **ctx, const char *name,
snprintf((char *)sa.salg_name, sizeof(sa.salg_name),
"hmac(%s)", ha->kernel_name);
if (_socket_init(&sa, &h->tfmfd, &h->opfd) < 0) {
if (crypt_kernel_socket_init(&sa, &h->tfmfd, &h->opfd) < 0) {
free(h);
return -EINVAL;
}