make reinitialisation work for CMAC

diff --git a/crypto/cmac/cmac.c b/crypto/cmac/cmac.c
index 064b67d073262b526cf3c2f7d3866c2e0164923f..88a323da9c7490ab82fa5c6a06c649627eb426fc 100644 (file)
--- a/crypto/cmac/cmac.c
+++ b/crypto/cmac/cmac.c
@@ -151,6 +151,8 @@ int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen,
                        return 0;
                if (!M_EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
                        return 0;
+               memset(ctx->tbl, 0, bl);
+               ctx->nlast_block = 0;
                return 1;
                }
        /* Initialiase context */