crypto: rsa - unimplement sign/verify for raw RSA backends

[linux-2.6-microblaze.git] / crypto / rsa.c

diff --git a/crypto/rsa.c b/crypto/rsa.c
index 4167980..5d427c1 100644 (file)
--- a/crypto/rsa.c
+++ b/crypto/rsa.c
@@ -50,34 +50,6 @@ static int _rsa_dec(const struct rsa_mpi_key *key, MPI m, MPI c)
        return mpi_powm(m, c, key->d, key->n);
 }
 
-/*
- * RSASP1 function [RFC3447 sec 5.2.1]
- * s = m^d mod n
- */
-static int _rsa_sign(const struct rsa_mpi_key *key, MPI s, MPI m)
-{
-       /* (1) Validate 0 <= m < n */
-       if (mpi_cmp_ui(m, 0) < 0 || mpi_cmp(m, key->n) >= 0)
-               return -EINVAL;
-
-       /* (2) s = m^d mod n */
-       return mpi_powm(s, m, key->d, key->n);
-}
-
-/*
- * RSAVP1 function [RFC3447 sec 5.2.2]
- * m = s^e mod n;
- */
-static int _rsa_verify(const struct rsa_mpi_key *key, MPI m, MPI s)
-{
-       /* (1) Validate 0 <= s < n */
-       if (mpi_cmp_ui(s, 0) < 0 || mpi_cmp(s, key->n) >= 0)
-               return -EINVAL;
-
-       /* (2) m = s^e mod n */
-       return mpi_powm(m, s, key->e, key->n);
-}
-
 static inline struct rsa_mpi_key *rsa_get_key(struct crypto_akcipher *tfm)
 {
        return akcipher_tfm_ctx(tfm);
@@ -160,85 +132,6 @@ err_free_m:
        return ret;
 }
 
-static int rsa_sign(struct akcipher_request *req)
-{
-       struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
-       const struct rsa_mpi_key *pkey = rsa_get_key(tfm);
-       MPI m, s = mpi_alloc(0);
-       int ret = 0;
-       int sign;
-
-       if (!s)
-               return -ENOMEM;
-
-       if (unlikely(!pkey->n || !pkey->d)) {
-               ret = -EINVAL;
-               goto err_free_s;
-       }
-
-       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_write_to_sgl(s, req->dst, req->dst_len, &sign);
-       if (ret)
-               goto err_free_m;
-
-       if (sign < 0)
-               ret = -EBADMSG;
-
-err_free_m:
-       mpi_free(m);
-err_free_s:
-       mpi_free(s);
-       return ret;
-}
-
-static int rsa_verify(struct akcipher_request *req)
-{
-       struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
-       const struct rsa_mpi_key *pkey = rsa_get_key(tfm);
-       MPI s, m = mpi_alloc(0);
-       int ret = 0;
-       int sign;
-
-       if (!m)
-               return -ENOMEM;
-
-       if (unlikely(!pkey->n || !pkey->e)) {
-               ret = -EINVAL;
-               goto err_free_m;
-       }
-
-       s = mpi_read_raw_from_sgl(req->src, req->src_len);
-       if (!s) {
-               ret = -ENOMEM;
-               goto err_free_m;
-       }
-
-       ret = _rsa_verify(pkey, m, s);
-       if (ret)
-               goto err_free_s;
-
-       ret = mpi_write_to_sgl(m, req->dst, req->dst_len, &sign);
-       if (ret)
-               goto err_free_s;
-
-       if (sign < 0)
-               ret = -EBADMSG;
-
-err_free_s:
-       mpi_free(s);
-err_free_m:
-       mpi_free(m);
-       return ret;
-}
-
 static void rsa_free_mpi_key(struct rsa_mpi_key *key)
 {
        mpi_free(key->d);
@@ -353,8 +246,6 @@ static void rsa_exit_tfm(struct crypto_akcipher *tfm)
 static struct akcipher_alg rsa = {
        .encrypt = rsa_enc,
        .decrypt = rsa_dec,
-       .sign = rsa_sign,
-       .verify = rsa_verify,
        .set_priv_key = rsa_set_priv_key,
        .set_pub_key = rsa_set_pub_key,
        .max_size = rsa_max_size,