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Diffstat (limited to 'package/kernel/lantiq/ltq-deu/src/ifxmips_md5_hmac.c')
-rw-r--r--package/kernel/lantiq/ltq-deu/src/ifxmips_md5_hmac.c91
1 files changed, 63 insertions, 28 deletions
diff --git a/package/kernel/lantiq/ltq-deu/src/ifxmips_md5_hmac.c b/package/kernel/lantiq/ltq-deu/src/ifxmips_md5_hmac.c
index 092b0581cc..ea808fdc5b 100644
--- a/package/kernel/lantiq/ltq-deu/src/ifxmips_md5_hmac.c
+++ b/package/kernel/lantiq/ltq-deu/src/ifxmips_md5_hmac.c
@@ -79,6 +79,7 @@ struct md5_hmac_ctx {
u32 block[MD5_BLOCK_WORDS];
u64 byte_count;
u32 dbn;
+ int started;
unsigned int keylen;
struct shash_desc *desc;
u32 (*temp)[MD5_BLOCK_WORDS];
@@ -86,6 +87,8 @@ struct md5_hmac_ctx {
extern int disable_deudma;
+static int md5_hmac_final_impl(struct shash_desc *desc, u8 *out, bool hash_final);
+
/*! \fn static void md5_hmac_transform(struct crypto_tfm *tfm, u32 const *in)
* \ingroup IFX_MD5_HMAC_FUNCTIONS
* \brief save input block to context
@@ -96,14 +99,14 @@ static void md5_hmac_transform(struct shash_desc *desc, u32 const *in)
{
struct md5_hmac_ctx *mctx = crypto_shash_ctx(desc->tfm);
- memcpy(&mctx->temp[mctx->dbn], in, 64); //dbn workaround
- mctx->dbn += 1;
-
- if ( (mctx->dbn<<4) > MD5_HMAC_DBN_TEMP_SIZE )
+ if ( ((mctx->dbn<<4)+1) > MD5_HMAC_DBN_TEMP_SIZE )
{
- printk("MD5_HMAC_DBN_TEMP_SIZE exceeded\n");
+ //printk("MD5_HMAC_DBN_TEMP_SIZE exceeded\n");
+ md5_hmac_final_impl(desc, (u8 *)mctx->hash, false);
}
+ memcpy(&mctx->temp[mctx->dbn], in, 64); //dbn workaround
+ mctx->dbn += 1;
}
/*! \fn int md5_hmac_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
@@ -184,6 +187,7 @@ static int md5_hmac_init(struct shash_desc *desc)
mctx->dbn = 0; //dbn workaround
+ mctx->started = 0;
return 0;
}
@@ -226,14 +230,26 @@ static int md5_hmac_update(struct shash_desc *desc, const u8 *data, unsigned int
return 0;
}
-/*! \fn void md5_hmac_final(struct crypto_tfm *tfm, u8 *out)
+/*! \fn static int md5_hmac_final(struct crypto_tfm *tfm, u8 *out)
* \ingroup IFX_MD5_HMAC_FUNCTIONS
- * \brief compute final md5 hmac value
+ * \brief call md5_hmac_final_impl with hash_final true
* \param tfm linux crypto algo transform
* \param out final md5 hmac output value
*/
static int md5_hmac_final(struct shash_desc *desc, u8 *out)
{
+ return md5_hmac_final_impl(desc, out, true);
+}
+
+/*! \fn static int md5_hmac_final_impl(struct crypto_tfm *tfm, u8 *out, bool hash_final)
+ * \ingroup IFX_MD5_HMAC_FUNCTIONS
+ * \brief compute final or intermediate md5 hmac value
+ * \param tfm linux crypto algo transform
+ * \param out final md5 hmac output value
+ * \param in finalize or intermediate processing
+*/
+static int md5_hmac_final_impl(struct shash_desc *desc, u8 *out, bool hash_final)
+{
struct md5_hmac_ctx *mctx = crypto_shash_ctx(desc->tfm);
const unsigned int offset = mctx->byte_count & 0x3f;
char *p = (char *)mctx->block + offset;
@@ -244,21 +260,22 @@ static int md5_hmac_final(struct shash_desc *desc, u8 *out)
int dbn;
u32 *in = mctx->temp[0];
+ if (hash_final) {
+ *p++ = 0x80;
+ if (padding < 0) {
+ memset(p, 0x00, padding + sizeof (u64));
+ md5_hmac_transform(desc, mctx->block);
+ p = (char *)mctx->block;
+ padding = 56;
+ }
+
+ memset(p, 0, padding);
+ mctx->block[14] = le32_to_cpu((mctx->byte_count + 64) << 3); // need to add 512 bit of the IPAD operation
+ mctx->block[15] = 0x00000000;
- *p++ = 0x80;
- if (padding < 0) {
- memset(p, 0x00, padding + sizeof (u64));
md5_hmac_transform(desc, mctx->block);
- p = (char *)mctx->block;
- padding = 56;
}
- memset(p, 0, padding);
- mctx->block[14] = le32_to_cpu((mctx->byte_count + 64) << 3); // need to add 512 bit of the IPAD operation
- mctx->block[15] = 0x00000000;
-
- md5_hmac_transform(desc, mctx->block);
-
CRTCL_SECT_HASH_START;
MD5_HASH_INIT;
@@ -266,7 +283,11 @@ static int md5_hmac_final(struct shash_desc *desc, u8 *out)
md5_hmac_setkey_hw(mctx->key, mctx->keylen);
//printk("\ndbn = %d\n", mctx->dbn);
- hashs->DBN = mctx->dbn;
+ if (hash_final) {
+ hashs->DBN = mctx->dbn;
+ } else {
+ hashs->DBN = mctx->dbn + 5;
+ }
asm("sync");
*IFX_HASH_CON = 0x0703002D; //khs, go, init, ndc, endi, kyue, hmen, md5
@@ -276,6 +297,15 @@ static int md5_hmac_final(struct shash_desc *desc, u8 *out)
// this will not take long
}
+ if (mctx->started) {
+ hashs->D1R = *((u32 *) mctx->hash + 0);
+ hashs->D2R = *((u32 *) mctx->hash + 1);
+ hashs->D3R = *((u32 *) mctx->hash + 2);
+ hashs->D4R = *((u32 *) mctx->hash + 3);
+ } else {
+ mctx->started = 1;
+ }
+
for (dbn = 0; dbn < mctx->dbn; dbn++)
{
for (i = 0; i < 16; i++) {
@@ -295,9 +325,11 @@ static int md5_hmac_final(struct shash_desc *desc, u8 *out)
#if 1
- //wait for digest ready
- while (! hashs->controlr.DGRY) {
- // this will not take long
+ if (hash_final) {
+ //wait for digest ready
+ while (! hashs->controlr.DGRY) {
+ // this will not take long
+ }
}
#endif
@@ -306,12 +338,15 @@ static int md5_hmac_final(struct shash_desc *desc, u8 *out)
*((u32 *) out + 2) = hashs->D3R;
*((u32 *) out + 3) = hashs->D4R;
- /* reset the context after we finish with the hash */
- mctx->byte_count = 0;
- memset(&mctx->hash[0], 0, sizeof(MD5_HASH_WORDS));
- memset(&mctx->block[0], 0, sizeof(MD5_BLOCK_WORDS));
- memset(&mctx->temp[0], 0, MD5_HMAC_DBN_TEMP_SIZE);
-
+ if (hash_final) {
+ /* reset the context after we finish with the hash */
+ mctx->byte_count = 0;
+ memset(&mctx->hash[0], 0, sizeof(MD5_HASH_WORDS));
+ memset(&mctx->block[0], 0, sizeof(MD5_BLOCK_WORDS));
+ memset(&mctx->temp[0], 0, MD5_HMAC_DBN_TEMP_SIZE);
+ } else {
+ mctx->dbn = 0;
+ }
CRTCL_SECT_HASH_END;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-07 06:16:02 +0000