Update cipher.h
minor fix
diff --git a/include/mbedtls/cipher.h b/include/mbedtls/cipher.h
index 4731817..a131452 100644
--- a/include/mbedtls/cipher.h
+++ b/include/mbedtls/cipher.h
@@ -97,7 +97,7 @@
*/
typedef enum {
MBEDTLS_CIPHER_NONE = 0, /**< Placeholder to mark the end of cipher-pair lists. */
- MBEDTLS_CIPHER_NULL, /**< The cipher-pair, treated as a stream cipher. */
+ MBEDTLS_CIPHER_NULL, /**< The identity stream cipher. */
MBEDTLS_CIPHER_AES_128_ECB, /**< AES cipher with 128-bit ECB mode. */
MBEDTLS_CIPHER_AES_192_ECB, /**< AES cipher with 192-bit ECB mode. */
MBEDTLS_CIPHER_AES_256_ECB, /**< AES cipher with 256-bit ECB mode. */