all repos — TinyCrypT @ c8b139650863d70d18fb01979f0868465f0057b1

Short and sweet classical cryptographic primitives 

Fixed failing tests on portable Ed25519
Juniper Beatitudes [email protected]
Sun, 03 May 2026 20:01:58 -0500
commit

c8b139650863d70d18fb01979f0868465f0057b1

parent

68ba22e4e7eef306f98b06edf8cbdc1d4be6d9ba

1 files changed, 6 insertions(+), 9 deletions(-)

jump to
M tinycrypt/portable/ed25519.c → tinycrypt/portable/ed25519.c 
@@ -746,8 +746,8 @@ tct_sha512 (privkey, 32, digest);
   digest[0] &= 0b11111000;
   digest[31] &= 0b01111111;
   digest[31] |= 0b01000000;
-  uint32_t k[16];
-  for (unsigned int i = 0; i < 16; ++i)
+  uint32_t k[8];
+  for (unsigned int i = 0; i < 8; ++i)
     {
       k[i] = from_le32 (digest + 4 * i);
     }

@@ -806,13 +806,10 @@ xB (r, rBx, rBy, rBz, rBt);
   inv256_modp (rBz, rBz);
   mult256_modp (rBz, rBx, rBx);
   mult256_modp (rBz, rBy, chunked);
-  for (unsigned int i = 0; i < 32; ++i) {
-    signature[i] = digest[i];
-  }
-  // for (unsigned int i = 0; i < 8; ++i)
-  //   {
-  //     to_le32 (chunked[i], signature + 4 * i);
-  //   }
+  for (unsigned int i = 0; i < 8; ++i)
+    {
+      to_le32 (chunked[i], signature + 4 * i);
+    }
   signature[31] &= 0b01111111;
   signature[31] |= (rBx[0] & 1) << 7;
   for (unsigned int i = 0; i < 32; ++i)