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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-05-18 13:18:31 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-05-18 13:42:15 +0300
commit437fd90c0250dee670290f9b714253671a990160 (patch)
treeb871786c360704244a07411c69fb58da9ead4a06 /qemu/roms/ipxe/src/crypto/sha256.c
parent5bbd6fe9b8bab2a93e548c5a53b032d1939eec05 (diff)
These changes are the raw update to qemu-2.6.
Collission happened in the following patches: migration: do cleanup operation after completion(738df5b9) Bug fix.(1750c932f86) kvmclock: add a new function to update env->tsc.(b52baab2) The code provided by the patches was already in the upstreamed version. Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'qemu/roms/ipxe/src/crypto/sha256.c')
-rw-r--r--qemu/roms/ipxe/src/crypto/sha256.c63
1 files changed, 45 insertions, 18 deletions
diff --git a/qemu/roms/ipxe/src/crypto/sha256.c b/qemu/roms/ipxe/src/crypto/sha256.c
index 36e02b3c2..0360d8d16 100644
--- a/qemu/roms/ipxe/src/crypto/sha256.c
+++ b/qemu/roms/ipxe/src/crypto/sha256.c
@@ -15,9 +15,13 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
*/
-FILE_LICENCE ( GPL2_OR_LATER );
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/** @file
*
@@ -47,11 +51,11 @@ struct sha256_variables {
uint32_t f;
uint32_t g;
uint32_t h;
- uint32_t w[64];
+ uint32_t w[SHA256_ROUNDS];
} __attribute__ (( packed ));
/** SHA-256 constants */
-static const uint32_t k[64] = {
+static const uint32_t k[SHA256_ROUNDS] = {
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
@@ -65,6 +69,37 @@ static const uint32_t k[64] = {
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
};
+/** SHA-256 initial digest values */
+static const struct sha256_digest sha256_init_digest = {
+ .h = {
+ cpu_to_be32 ( 0x6a09e667 ),
+ cpu_to_be32 ( 0xbb67ae85 ),
+ cpu_to_be32 ( 0x3c6ef372 ),
+ cpu_to_be32 ( 0xa54ff53a ),
+ cpu_to_be32 ( 0x510e527f ),
+ cpu_to_be32 ( 0x9b05688c ),
+ cpu_to_be32 ( 0x1f83d9ab ),
+ cpu_to_be32 ( 0x5be0cd19 ),
+ },
+};
+
+/**
+ * Initialise SHA-256 family algorithm
+ *
+ * @v context SHA-256 context
+ * @v init Initial digest values
+ * @v digestsize Digest size
+ */
+void sha256_family_init ( struct sha256_context *context,
+ const struct sha256_digest *init,
+ size_t digestsize ) {
+
+ context->len = 0;
+ context->digestsize = digestsize;
+ memcpy ( &context->ddd.dd.digest, init,
+ sizeof ( context->ddd.dd.digest ) );
+}
+
/**
* Initialise SHA-256 algorithm
*
@@ -73,15 +108,8 @@ static const uint32_t k[64] = {
static void sha256_init ( void *ctx ) {
struct sha256_context *context = ctx;
- context->ddd.dd.digest.h[0] = cpu_to_be32 ( 0x6a09e667 );
- context->ddd.dd.digest.h[1] = cpu_to_be32 ( 0xbb67ae85 );
- context->ddd.dd.digest.h[2] = cpu_to_be32 ( 0x3c6ef372 );
- context->ddd.dd.digest.h[3] = cpu_to_be32 ( 0xa54ff53a );
- context->ddd.dd.digest.h[4] = cpu_to_be32 ( 0x510e527f );
- context->ddd.dd.digest.h[5] = cpu_to_be32 ( 0x9b05688c );
- context->ddd.dd.digest.h[6] = cpu_to_be32 ( 0x1f83d9ab );
- context->ddd.dd.digest.h[7] = cpu_to_be32 ( 0x5be0cd19 );
- context->len = 0;
+ sha256_family_init ( context, &sha256_init_digest,
+ sizeof ( struct sha256_digest ) );
}
/**
@@ -139,7 +167,7 @@ static void sha256_digest ( struct sha256_context *context ) {
}
/* Initialise w[16..63] */
- for ( i = 16 ; i < 64 ; i++ ) {
+ for ( i = 16 ; i < SHA256_ROUNDS ; i++ ) {
s0 = ( ror32 ( w[i-15], 7 ) ^ ror32 ( w[i-15], 18 ) ^
( w[i-15] >> 3 ) );
s1 = ( ror32 ( w[i-2], 17 ) ^ ror32 ( w[i-2], 19 ) ^
@@ -148,7 +176,7 @@ static void sha256_digest ( struct sha256_context *context ) {
}
/* Main loop */
- for ( i = 0 ; i < 64 ; i++ ) {
+ for ( i = 0 ; i < SHA256_ROUNDS ; i++ ) {
s0 = ( ror32 ( *a, 2 ) ^ ror32 ( *a, 13 ) ^ ror32 ( *a, 22 ) );
maj = ( ( *a & *b ) ^ ( *a & *c ) ^ ( *b & *c ) );
t2 = ( s0 + maj );
@@ -186,7 +214,7 @@ static void sha256_digest ( struct sha256_context *context ) {
* @v data Data
* @v len Length of data
*/
-static void sha256_update ( void *ctx, const void *data, size_t len ) {
+void sha256_update ( void *ctx, const void *data, size_t len ) {
struct sha256_context *context = ctx;
const uint8_t *byte = data;
size_t offset;
@@ -209,7 +237,7 @@ static void sha256_update ( void *ctx, const void *data, size_t len ) {
* @v ctx SHA-256 context
* @v out Output buffer
*/
-static void sha256_final ( void *ctx, void *out ) {
+void sha256_final ( void *ctx, void *out ) {
struct sha256_context *context = ctx;
uint64_t len_bits;
uint8_t pad;
@@ -230,8 +258,7 @@ static void sha256_final ( void *ctx, void *out ) {
assert ( ( context->len % sizeof ( context->ddd.dd.data ) ) == 0 );
/* Copy out final digest */
- memcpy ( out, &context->ddd.dd.digest,
- sizeof ( context->ddd.dd.digest ) );
+ memcpy ( out, &context->ddd.dd.digest, context->digestsize );
}
/** SHA-256 algorithm */