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authorHerbert Xu <herbert@gondor.apana.org.au>2016-06-29 19:32:21 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2016-07-01 23:45:18 +0800
commit9b45b7bba3d22de52e09df63c50f390a193a3f53 (patch)
tree589fa304ec152558fc189f2da773154bd334e64c /crypto
parent50d2b643ea6675927435743633a57c2a9cfd8d83 (diff)
crypto: rsa - Generate fixed-length output
Every implementation of RSA that we have naturally generates output with leading zeroes. The one and only user of RSA, pkcs1pad wants to have those leading zeroes in place, in fact because they are currently absent it has to write those zeroes itself. So we shouldn't be stripping leading zeroes in the first place. In fact this patch makes rsa-generic produce output with fixed length so that pkcs1pad does not need to do any extra work. This patch also changes DH to use the new interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/dh.c2
-rw-r--r--crypto/rsa.c8
2 files changed, 5 insertions, 5 deletions
diff --git a/crypto/dh.c b/crypto/dh.c
index 5e960fe28681..9d19360e7189 100644
--- a/crypto/dh.c
+++ b/crypto/dh.c
@@ -129,7 +129,7 @@ static int dh_compute_value(struct kpp_request *req)
if (ret)
goto err_free_base;
- ret = mpi_write_to_sgl(val, req->dst, &req->dst_len, &sign);
+ ret = mpi_write_to_sgl(val, req->dst, req->dst_len, &sign);
if (ret)
goto err_free_base;
diff --git a/crypto/rsa.c b/crypto/rsa.c
index dc692d43b666..4c280b6a3ea9 100644
--- a/crypto/rsa.c
+++ b/crypto/rsa.c
@@ -108,7 +108,7 @@ static int rsa_enc(struct akcipher_request *req)
if (ret)
goto err_free_m;
- ret = mpi_write_to_sgl(c, req->dst, &req->dst_len, &sign);
+ ret = mpi_write_to_sgl(c, req->dst, req->dst_len, &sign);
if (ret)
goto err_free_m;
@@ -147,7 +147,7 @@ static int rsa_dec(struct akcipher_request *req)
if (ret)
goto err_free_c;
- ret = mpi_write_to_sgl(m, req->dst, &req->dst_len, &sign);
+ ret = mpi_write_to_sgl(m, req->dst, req->dst_len, &sign);
if (ret)
goto err_free_c;
@@ -185,7 +185,7 @@ static int rsa_sign(struct akcipher_request *req)
if (ret)
goto err_free_m;
- ret = mpi_write_to_sgl(s, req->dst, &req->dst_len, &sign);
+ ret = mpi_write_to_sgl(s, req->dst, req->dst_len, &sign);
if (ret)
goto err_free_m;
@@ -226,7 +226,7 @@ static int rsa_verify(struct akcipher_request *req)
if (ret)
goto err_free_s;
- ret = mpi_write_to_sgl(m, req->dst, &req->dst_len, &sign);
+ ret = mpi_write_to_sgl(m, req->dst, req->dst_len, &sign);
if (ret)
goto err_free_s;

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