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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2016-06-29 14:32:21 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-07-01 18:45:18 +0300 |
| commit | 9b45b7bba3d22de52e09df63c50f390a193a3f53 (patch) | |
| tree | 589fa304ec152558fc189f2da773154bd334e64c /crypto/rsa.c | |
| parent | 50d2b643ea6675927435743633a57c2a9cfd8d83 (diff) | |
| download | linux-9b45b7bba3d22de52e09df63c50f390a193a3f53.tar.xz | |
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/rsa.c')
| -rw-r--r-- | crypto/rsa.c | 8 |
1 files changed, 4 insertions, 4 deletions
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; |