diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig | 13 | ||||
| -rw-r--r-- | lib/circbuf.c | 8 |
2 files changed, 19 insertions, 2 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index a0d5d926eb..db0915153c 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -66,6 +66,17 @@ config RBTREE source lib/dhry/Kconfig +menu "Security support" + +config AES + bool "Support the AES algorithm" + help + This provides a means to encrypt and decrypt data using the AES + (Advanced Encryption Standard). This algorithm uses a symetric key + and is widely used as a streaming cipher. Different key lengths are + supported by the algorithm but only a 128-bit key is supported at + present. + source lib/rsa/Kconfig config TPM @@ -79,6 +90,8 @@ config TPM for the low-level TPM interface, but only one TPM is supported at a time by the TPM library. +endmenu + menu "Hashing Support" config SHA1 diff --git a/lib/circbuf.c b/lib/circbuf.c index 9848da3b7b..6ed0516430 100644 --- a/lib/circbuf.c +++ b/lib/circbuf.c @@ -41,11 +41,13 @@ int buf_free (circbuf_t * buf) int buf_pop (circbuf_t * buf, char *dest, unsigned int len) { unsigned int i; - char *p = buf->top; + char *p; assert (buf != NULL); assert (dest != NULL); + p = buf->top; + /* Cap to number of bytes in buffer */ if (len > buf->size) len = buf->size; @@ -69,11 +71,13 @@ int buf_push (circbuf_t * buf, const char *src, unsigned int len) { /* NOTE: this function allows push to overwrite old data. */ unsigned int i; - char *p = buf->tail; + char *p; assert (buf != NULL); assert (src != NULL); + p = buf->tail; + for (i = 0; i < len; i++) { *p++ = src[i]; if (p == buf->end) { |