| Message ID | 20210720085535.141486-7-tudor.ambarus@microchip.com |
|---|---|
| State | Accepted |
| Commit | 031f5e00150895232e658f67e66382b6c867ba13 |
| Headers | show |
| Series | crypto: atmel-{aes, tdes}: Fix corner cases - crypto self tests | expand |
diff --git a/drivers/crypto/atmel-tdes.c b/drivers/crypto/atmel-tdes.c index abbf1b7a75ab..8380e0ab149a 100644 --- a/drivers/crypto/atmel-tdes.c +++ b/drivers/crypto/atmel-tdes.c @@ -682,6 +682,9 @@ static int atmel_tdes_crypt(struct skcipher_request *req, unsigned long mode) struct atmel_tdes_reqctx *rctx = skcipher_request_ctx(req); struct device *dev = ctx->dd->dev; + if (!req->cryptlen) + return 0; + switch (mode & TDES_FLAGS_OPMODE_MASK) { case TDES_FLAGS_CFB8: if (!IS_ALIGNED(req->cryptlen, CFB8_BLOCK_SIZE)) {
FIPS81 requires for the ECB, CBC, CFB, and OFB modes that the plaintext and ciphertext to have a positive integer length. Add this constraint and just return 0 for a zero length cryptlen. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> --- drivers/crypto/atmel-tdes.c | 3 +++ 1 file changed, 3 insertions(+)