1 files changed, 128 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/shake.c b/security/nss/lib/freebl/shake.c
new file mode 100644
index 0000000000..fe20cf6f2a
--- /dev/null
+++ b/security/nss/lib/freebl/shake.c
@@ -0,0 +1,128 @@
+
+#ifdef FREEBL_NO_DEPEND
+#include "stubs.h"
+#endif
+
+#include "prtypes.h" /* for PRUintXX */
+#include "secport.h" /* for PORT_XXX */
+#include "blapi.h"
+#include "blapii.h"
+#include "blapit.h"
+#include "secerr.h"
+#include "Hacl_Hash_SHA3.h"
+
+struct SHAKEContextStr {
+    Hacl_Streaming_Keccak_state *st;
+};
+
+SHAKE_128Context *
+SHAKE_128_NewContext()
+{
+    SHAKE_128Context *ctx = PORT_New(SHAKE_128Context);
+    ctx->st = Hacl_Streaming_Keccak_malloc(Spec_Hash_Definitions_Shake128);
+    return ctx;
+}
+
+SHAKE_256Context *
+SHAKE_256_NewContext()
+{
+    SHAKE_256Context *ctx = PORT_New(SHAKE_256Context);
+    ctx->st = Hacl_Streaming_Keccak_malloc(Spec_Hash_Definitions_Shake256);
+    return ctx;
+}
+
+void
+SHAKE_128_DestroyContext(SHAKE_128Context *ctx, PRBool freeit)
+{
+    Hacl_Streaming_Keccak_reset(ctx->st);
+    if (freeit) {
+        Hacl_Streaming_Keccak_free(ctx->st);
+        PORT_Free(ctx);
+    }
+}
+
+void
+SHAKE_256_DestroyContext(SHAKE_256Context *ctx, PRBool freeit)
+{
+    Hacl_Streaming_Keccak_reset(ctx->st);
+    if (freeit) {
+        Hacl_Streaming_Keccak_free(ctx->st);
+        PORT_Free(ctx);
+    }
+}
+
+void
+SHAKE_128_Begin(SHAKE_128Context *ctx)
+{
+    Hacl_Streaming_Keccak_reset(ctx->st);
+}
+
+void
+SHAKE_256_Begin(SHAKE_256Context *ctx)
+{
+    Hacl_Streaming_Keccak_reset(ctx->st);
+}
+
+void
+SHAKE_128_Absorb(SHAKE_128Context *ctx, const unsigned char *input,
+                 unsigned int inputLen)
+{
+    Hacl_Streaming_Keccak_update(ctx->st, (uint8_t *)input, inputLen);
+}
+
+void
+SHAKE_256_Absorb(SHAKE_256Context *ctx, const unsigned char *input,
+                 unsigned int inputLen)
+{
+    Hacl_Streaming_Keccak_update(ctx->st, (uint8_t *)input, inputLen);
+}
+
+void
+SHAKE_128_SqueezeEnd(SHAKE_128Context *ctx, unsigned char *digest,
+                     unsigned int digestLen)
+{
+    Hacl_Streaming_Keccak_squeeze(ctx->st, digest, digestLen);
+}
+
+void
+SHAKE_256_SqueezeEnd(SHAKE_256Context *ctx, unsigned char *digest,
+                     unsigned int digestLen)
+{
+    Hacl_Streaming_Keccak_squeeze(ctx->st, digest, digestLen);
+}
+
+SECStatus
+SHAKE_128_HashBuf(unsigned char *dest, PRUint32 dest_length,
+                  const unsigned char *src, PRUint32 src_length)
+{
+    SHAKE_128Context *ctx = SHAKE_128_NewContext();
+    SHAKE_128_Begin(ctx);
+    SHAKE_128_Absorb(ctx, src, src_length);
+    SHAKE_128_SqueezeEnd(ctx, dest, dest_length);
+    SHAKE_128_DestroyContext(ctx, true);
+    return SECSuccess;
+}
+
+SECStatus
+SHAKE_256_HashBuf(unsigned char *dest, PRUint32 dest_length,
+                  const unsigned char *src, PRUint32 src_length)
+{
+    SHAKE_256Context *ctx = SHAKE_256_NewContext();
+    SHAKE_256_Begin(ctx);
+    SHAKE_256_Absorb(ctx, src, src_length);
+    SHAKE_256_SqueezeEnd(ctx, dest, dest_length);
+    SHAKE_256_DestroyContext(ctx, true);
+    return SECSuccess;
+}
+
+SECStatus
+SHAKE_128_Hash(unsigned char *dest, unsigned int dest_length, const char *src)
+{
+    return SHAKE_128_HashBuf(dest, dest_length, (const unsigned char *)src, PORT_Strlen(src));
+}
+
+SECStatus
+SHAKE_256_Hash(unsigned char *dest, unsigned int dest_length, const char *src)
+{
+    return SHAKE_256_HashBuf(dest, dest_length, (const unsigned char *)src, PORT_Strlen(src));
+}