shachain: allow overriding of number of bits, add cmdline tool.

[ccan] / ccan / crypto / sha256 / sha256.h

diff --git a/ccan/crypto/sha256/sha256.h b/ccan/crypto/sha256/sha256.h
index eedaa94ee77df0cfe3e875ec45597f364bbea55f..9a310b9564c6be7bfcaca90a718d280788f303c7 100644 (file)
--- a/ccan/crypto/sha256/sha256.h
+++ b/ccan/crypto/sha256/sha256.h
@@ -6,7 +6,7 @@
 #include <stdlib.h>
 
 /* Uncomment this to use openssl's SHA256 routines (and link with -lcrypto) */
-//#define CCAN_CRYPTO_SHA256_USE_OPENSSL 1
+/*#define CCAN_CRYPTO_SHA256_USE_OPENSSL 1*/
 
 #ifdef CCAN_CRYPTO_SHA256_USE_OPENSSL
 #include <openssl/sha.h>
@@ -21,10 +21,8 @@
  */
 struct sha256 {
        union {
-               /* Array of chars */
-               unsigned char u8[32];
-               /* Array of uint32_t */
                uint32_t u32[8];
+               unsigned char u8[32];
        } u;
 };
 
@@ -47,11 +45,11 @@ struct sha256_ctx {
        SHA256_CTX c;
 #else
        uint32_t s[8];
-       uint64_t bytes;
        union {
-               uint32_t u32[8];
+               uint32_t u32[16];
                unsigned char u8[64];
        } buf;
+       size_t bytes;
 #endif
 };
 
@@ -82,7 +80,7 @@ void sha256_init(struct sha256_ctx *ctx);
 /**
  * SHA256_INIT - initializer for an SHA256 context.
  *
- * This can be used to staticly initialize an SHA256 context (instead
+ * This can be used to statically initialize an SHA256 context (instead
  * of sha256_init()).
  *
  * Example:
@@ -106,7 +104,8 @@ void sha256_init(struct sha256_ctx *ctx);
 #else
 #define SHA256_INIT                                                    \
        { { 0x6a09e667ul, 0xbb67ae85ul, 0x3c6ef372ul, 0xa54ff53aul,     \
-           0x510e527ful, 0x9b05688cul, 0x1f83d9abul, 0x5be0cd19ul }, 0 }
+           0x510e527ful, 0x9b05688cul, 0x1f83d9abul, 0x5be0cd19ul },   \
+         { { 0 } }, 0 }
 #endif
 
 /**