Fix curve order of k256

MasterJ93 · MasterJ93 · commit b79ea577768a · 2026-03-26T21:19:06.000-04:00
diff --git a/Sources/ATCryptography/Extensions/ECDSASignatureExtensions.swift b/Sources/ATCryptography/Extensions/ECDSASignatureExtensions.swift
@@ -104,8 +104,8 @@ extension secp256k1.Signing.ECDSASignature {
                 return nil
             }
 
-            // Curve order for k256.
-            let curveOrder = BigInt("FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551", radix: 16)!
+            // Curve order for secp256k1 (k256).
+            let curveOrder = BigInt("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141", radix: 16)!
             let halfOrder = curveOrder / 2
 
             let sInt = BigInt(data: s)

Original file line number	Diff line number	Diff line change
`@@ -104,8 +104,8 @@ extension secp256k1.Signing.ECDSASignature {`
`104`	`104`	`return nil`
`105`	`105`	`}`
`106`	`106`
`107`		`- // Curve order for k256.`
`108`		`- let curveOrder = BigInt("FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551", radix: 16)!`
	`107`	`+ // Curve order for secp256k1 (k256).`
	`108`	`+ let curveOrder = BigInt("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141", radix: 16)!`
`109`	`109`	`let halfOrder = curveOrder / 2`
`110`	`110`
`111`	`111`	`let sInt = BigInt(data: s)`