(unpaddedLen: number)
| 61 | } |
| 62 | |
| 63 | function calcPaddedLen(unpaddedLen: number): number { |
| 64 | if (unpaddedLen <= 32) { |
| 65 | return 32 |
| 66 | } |
| 67 | const nextPower = 1 << (Math.floor(Math.log2(unpaddedLen - 1)) + 1) |
| 68 | const chunk = nextPower <= 256 ? 32 : nextPower / 8 |
| 69 | return chunk * (Math.floor((unpaddedLen - 1) / chunk) + 1) |
| 70 | } |
| 71 | |
| 72 | function pad(plaintext: string): Buffer { |
| 73 | const unpadded = Buffer.from(plaintext, 'utf8') |