From 9f4dfd1e76a5bdb2e17a92f2460fafbf8b760a8b Mon Sep 17 00:00:00 2001
From: Chris Duncan <chris@codecow.com>
Date: Tue, 30 Jun 2026 22:45:29 -0700
Subject: [PATCH] Extract blake initialization to separate private method.

---
 src/lib/crypto/blake2b.ts | 54 +++++++++++++++++++++------------------
 1 file changed, 29 insertions(+), 25 deletions(-)

diff --git a/src/lib/crypto/blake2b.ts b/src/lib/crypto/blake2b.ts
index d4526ac..d407199 100644
--- a/src/lib/crypto/blake2b.ts
+++ b/src/lib/crypto/blake2b.ts
@@ -102,6 +102,32 @@ export class Blake2b {
 		this.#G(r, 7, 3, 4, 9, 14)
 	}
 
+	#blake2bInit (length: number, key?: Bytes, salt?: Bytes, personal?: Bytes): void {
+		// output length in bytes
+		this.#outlen = length
+
+		// state, 'param block'
+		this.#parameter_block[0] = length
+		this.#parameter_block[1] = key?.length ?? 0
+		this.#parameter_block[2] = 1 // fanout
+		this.#parameter_block[3] = 1 // depth
+
+		if (salt) this.#parameter_block.set(salt, 32)
+		if (personal) this.#parameter_block.set(personal, 48)
+
+		// initialize hash state
+		for (let i = 0; i < 8; i++) {
+			this.#h[i] = Blake2b.IV[i] ^ this.#parameter_view.getBigUint64(i << 3, true)
+		}
+
+		// key the hash, if applicable
+		if (key) {
+			this.#blake2bUpdate(key)
+			// force input buffer to reset for first block of actual message
+			this.#c = 128
+		}
+	}
+
 	/**
 	 * Compression function called during three phases: on keying (if applicable),
 	 * each time the input buffer is filled, and when finalizing message block.
@@ -169,7 +195,7 @@ export class Blake2b {
 		this.#b.fill(0, this.#c) // pad final block with zeros
 		this.#blake2bCompress(true) // set final block flag and compress
 		const data = new DataView(this.#h.buffer)
-		for (let i = 0; i < this.#outlen; i++) {
+		for (let i = 0; i < out.length; i++) {
 			out[i] = data.getUint8(i)
 		}
 	}
@@ -206,7 +232,7 @@ export class Blake2b {
 	/** Message block */
 	#m: BigUint64Array = new BigUint64Array(16)
 	/** User-requested output length */
-	#outlen: number
+	#outlen: number = 64
 
 	/**
 	 * Creates a BLAKE2b hashing context.
@@ -252,29 +278,7 @@ export class Blake2b {
 				throw new RangeError(`personal must be ${B.PERSONALBYTES} bytes`)
 			}
 		}
-
-		this.#outlen = length // output length in bytes
-
-		// state, 'param block'
-		this.#parameter_block[0] = length
-		this.#parameter_block[1] = key?.length ?? 0
-		this.#parameter_block[2] = 1 // fanout
-		this.#parameter_block[3] = 1 // depth
-
-		if (salt) this.#parameter_block.set(salt, 32)
-		if (personal) this.#parameter_block.set(personal, 48)
-
-		// initialize hash state
-		for (let i = 0; i < 8; i++) {
-			this.#h[i] = B.IV[i] ^ this.#parameter_view.getBigUint64(i << 3, true)
-		}
-
-		// key the hash, if applicable
-		if (key) {
-			this.#blake2bUpdate(key)
-			// force input buffer to reset for first block of actual message
-			this.#c = 128
-		}
+		this.#blake2bInit(length, key, salt, personal)
 	}
 
 	/**
-- 
2.52.0