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authorTadeusz Struk <tadeusz.struk@intel.com>2015-10-08 09:26:55 -0700
committerHerbert Xu <herbert@gondor.apana.org.au>2015-10-14 22:23:16 +0800
commit22287b0b5988b603b5f0daa282c89aaf2b877313 (patch)
treec8a1d714f4184feafc2885ab4a2968451397da03 /crypto/rsa.c
parent2d4d1eea540b27c72488fd1914674c42473d53df (diff)
crypto: akcipher - Changes to asymmetric key API
Setkey function has been split into set_priv_key and set_pub_key. Akcipher requests takes sgl for src and dst instead of void *. Users of the API i.e. two existing RSA implementation and test mgr code have been updated accordingly. Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/rsa.c')
-rw-r--r--crypto/rsa.c83
1 files changed, 49 insertions, 34 deletions
diff --git a/crypto/rsa.c b/crypto/rsa.c
index 466003e1a8cf..1093e041db03 100644
--- a/crypto/rsa.c
+++ b/crypto/rsa.c
@@ -97,24 +97,21 @@ static int rsa_enc(struct akcipher_request *req)
goto err_free_c;
}
- m = mpi_read_raw_data(req->src, req->src_len);
- if (!m) {
- ret = -ENOMEM;
+ ret = -ENOMEM;
+ m = mpi_read_raw_from_sgl(req->src, req->src_len);
+ if (!m)
goto err_free_c;
- }
ret = _rsa_enc(pkey, c, m);
if (ret)
goto err_free_m;
- ret = mpi_read_buffer(c, req->dst, req->dst_len, &req->dst_len, &sign);
+ ret = mpi_write_to_sgl(c, req->dst, &req->dst_len, &sign);
if (ret)
goto err_free_m;
- if (sign < 0) {
+ if (sign < 0)
ret = -EBADMSG;
- goto err_free_m;
- }
err_free_m:
mpi_free(m);
@@ -145,25 +142,21 @@ static int rsa_dec(struct akcipher_request *req)
goto err_free_m;
}
- c = mpi_read_raw_data(req->src, req->src_len);
- if (!c) {
- ret = -ENOMEM;
+ ret = -ENOMEM;
+ c = mpi_read_raw_from_sgl(req->src, req->src_len);
+ if (!c)
goto err_free_m;
- }
ret = _rsa_dec(pkey, m, c);
if (ret)
goto err_free_c;
- ret = mpi_read_buffer(m, req->dst, req->dst_len, &req->dst_len, &sign);
+ ret = mpi_write_to_sgl(m, req->dst, &req->dst_len, &sign);
if (ret)
goto err_free_c;
- if (sign < 0) {
+ if (sign < 0)
ret = -EBADMSG;
- goto err_free_c;
- }
-
err_free_c:
mpi_free(c);
err_free_m:
@@ -193,24 +186,21 @@ static int rsa_sign(struct akcipher_request *req)
goto err_free_s;
}
- m = mpi_read_raw_data(req->src, req->src_len);
- if (!m) {
- ret = -ENOMEM;
+ ret = -ENOMEM;
+ m = mpi_read_raw_from_sgl(req->src, req->src_len);
+ if (!m)
goto err_free_s;
- }
ret = _rsa_sign(pkey, s, m);
if (ret)
goto err_free_m;
- ret = mpi_read_buffer(s, req->dst, req->dst_len, &req->dst_len, &sign);
+ ret = mpi_write_to_sgl(s, req->dst, &req->dst_len, &sign);
if (ret)
goto err_free_m;
- if (sign < 0) {
+ if (sign < 0)
ret = -EBADMSG;
- goto err_free_m;
- }
err_free_m:
mpi_free(m);
@@ -241,7 +231,8 @@ static int rsa_verify(struct akcipher_request *req)
goto err_free_m;
}
- s = mpi_read_raw_data(req->src, req->src_len);
+ ret = -ENOMEM;
+ s = mpi_read_raw_from_sgl(req->src, req->src_len);
if (!s) {
ret = -ENOMEM;
goto err_free_m;
@@ -251,14 +242,12 @@ static int rsa_verify(struct akcipher_request *req)
if (ret)
goto err_free_s;
- ret = mpi_read_buffer(m, req->dst, req->dst_len, &req->dst_len, &sign);
+ ret = mpi_write_to_sgl(m, req->dst, &req->dst_len, &sign);
if (ret)
goto err_free_s;
- if (sign < 0) {
+ if (sign < 0)
ret = -EBADMSG;
- goto err_free_s;
- }
err_free_s:
mpi_free(s);
@@ -282,13 +271,13 @@ static int rsa_check_key_length(unsigned int len)
return -EINVAL;
}
-static int rsa_setkey(struct crypto_akcipher *tfm, const void *key,
- unsigned int keylen)
+static int rsa_set_pub_key(struct crypto_akcipher *tfm, const void *key,
+ unsigned int keylen)
{
struct rsa_key *pkey = akcipher_tfm_ctx(tfm);
int ret;
- ret = rsa_parse_key(pkey, key, keylen);
+ ret = rsa_parse_pub_key(pkey, key, keylen);
if (ret)
return ret;
@@ -299,6 +288,30 @@ static int rsa_setkey(struct crypto_akcipher *tfm, const void *key,
return ret;
}
+static int rsa_set_priv_key(struct crypto_akcipher *tfm, const void *key,
+ unsigned int keylen)
+{
+ struct rsa_key *pkey = akcipher_tfm_ctx(tfm);
+ int ret;
+
+ ret = rsa_parse_priv_key(pkey, key, keylen);
+ if (ret)
+ return ret;
+
+ if (rsa_check_key_length(mpi_get_size(pkey->n) << 3)) {
+ rsa_free_key(pkey);
+ ret = -EINVAL;
+ }
+ return ret;
+}
+
+static int rsa_max_size(struct crypto_akcipher *tfm)
+{
+ struct rsa_key *pkey = akcipher_tfm_ctx(tfm);
+
+ return pkey->n ? mpi_get_size(pkey->n) : -EINVAL;
+}
+
static void rsa_exit_tfm(struct crypto_akcipher *tfm)
{
struct rsa_key *pkey = akcipher_tfm_ctx(tfm);
@@ -311,7 +324,9 @@ static struct akcipher_alg rsa = {
.decrypt = rsa_dec,
.sign = rsa_sign,
.verify = rsa_verify,
- .setkey = rsa_setkey,
+ .set_priv_key = rsa_set_priv_key,
+ .set_pub_key = rsa_set_pub_key,
+ .max_size = rsa_max_size,
.exit = rsa_exit_tfm,
.base = {
.cra_name = "rsa",

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