Revert "Add polynomial for 1024-bit block cipher."

This reverts commit d654c893ef4658da83ed5753cb4c360e60e5afa3. The polinomial for 1024-bit block sizes had a typo.

1 files changed, 1 insertions, 10 deletions

diff --git a/cmac.cpp b/cmac.cpp
index 81047827..ca04d0bd 100644
--- a/cmac.cpp
+++ b/cmac.cpp
@@ -31,24 +31,15 @@ static void MulU(byte *k, unsigned int length)
 			k[15] ^= 0x87;

 			break;

 		case 32:

-			// https://crypto.stackexchange.com/q/9815/10496

-			// Polynomial x^256 + x^10 + x^5 + x + 1

+			// Should this be 0x425?

 			k[30] ^= 4;

 			k[31] ^= 0x23;

 			break;

 		case 64:

 			// https://crypto.stackexchange.com/q/9815/10496

-			// Polynomial x^512 + x^8 + x^5 + x^2 + 1

 			k[62] ^= 1;

 			k[63] ^= 0x25;

 			break;

-		case 128:

-			// https://crypto.stackexchange.com/q/9815/10496

-			// Polynomial x^1024 + x^19 + x^6 + x + 1

-			k[126] ^= 8;

-			k[126] ^= 0x00;

-			k[127] ^= 0x43;

-			break;

 		default:

 			throw InvalidArgument("CMAC: " + IntToString(length) + " is not a supported cipher block size");

 		}