refactor: remove frivolous comments from auth validation/credentials

Also removed internal/nostr package - now using northwest.io/nostr library.

1 files changed, 0 insertions, 162 deletions

diff --git a/internal/nostr/bech32.go b/internal/nostr/bech32.go
deleted file mode 100644
index c8b1293..0000000
--- a/internal/nostr/bech32.go
+++ /dev/null
@@ -1,162 +0,0 @@
-package nostr
-
-import (
-        "fmt"
-        "strings"
-)
-
-// Bech32 encoding/decoding for NIP-19 (npub, nsec, note, etc.)
-// Implements BIP-173 bech32 encoding.
-
-const bech32Alphabet = "qpzry9x8gf2tvdw0s3jn54khce6mua7l"
-
-var bech32AlphabetMap [256]int8
-
-func init() {
-        for i := range bech32AlphabetMap {
-                bech32AlphabetMap[i] = -1
-        }
-        for i, c := range bech32Alphabet {
-                bech32AlphabetMap[c] = int8(i)
-        }
-}
-
-// bech32Polymod computes the BCH checksum.
-func bech32Polymod(values []int) int {
-        gen := []int{0x3b6a57b2, 0x26508e6d, 0x1ea119fa, 0x3d4233dd, 0x2a1462b3}
-        chk := 1
-        for _, v := range values {
-                top := chk >> 25
-                chk = (chk&0x1ffffff)<<5 ^ v
-                for i := 0; i < 5; i++ {
-                        if (top>>i)&1 == 1 {
-                                chk ^= gen[i]
-                        }
-                }
-        }
-        return chk
-}
-
-// bech32HRPExpand expands the human-readable part for checksum computation.
-func bech32HRPExpand(hrp string) []int {
-        result := make([]int, len(hrp)*2+1)
-        for i, c := range hrp {
-                result[i] = int(c) >> 5
-                result[i+len(hrp)+1] = int(c) & 31
-        }
-        return result
-}
-
-// bech32CreateChecksum creates the 6-character checksum.
-func bech32CreateChecksum(hrp string, data []int) []int {
-        values := append(bech32HRPExpand(hrp), data...)
-        values = append(values, []int{0, 0, 0, 0, 0, 0}...)
-        polymod := bech32Polymod(values) ^ 1
-        checksum := make([]int, 6)
-        for i := 0; i < 6; i++ {
-                checksum[i] = (polymod >> (5 * (5 - i))) & 31
-        }
-        return checksum
-}
-
-// bech32VerifyChecksum verifies the checksum of bech32 data.
-func bech32VerifyChecksum(hrp string, data []int) bool {
-        return bech32Polymod(append(bech32HRPExpand(hrp), data...)) == 1
-}
-
-// convertBits converts between bit groups.
-func convertBits(data []byte, fromBits, toBits int, pad bool) ([]int, error) {
-        acc := 0
-        bits := 0
-        result := make([]int, 0, len(data)*fromBits/toBits+1)
-        maxv := (1 << toBits) - 1
-
-        for _, value := range data {
-                acc = (acc << fromBits) | int(value)
-                bits += fromBits
-                for bits >= toBits {
-                        bits -= toBits
-                        result = append(result, (acc>>bits)&maxv)
-                }
-        }
-
-        if pad {
-                if bits > 0 {
-                        result = append(result, (acc<<(toBits-bits))&maxv)
-                }
-        } else if bits >= fromBits || ((acc<<(toBits-bits))&maxv) != 0 {
-                return nil, fmt.Errorf("invalid padding")
-        }
-
-        return result, nil
-}
-
-// Bech32Encode encodes data with the given human-readable prefix.
-func Bech32Encode(hrp string, data []byte) (string, error) {
-        values, err := convertBits(data, 8, 5, true)
-        if err != nil {
-                return "", err
-        }
-
-        checksum := bech32CreateChecksum(hrp, values)
-        combined := append(values, checksum...)
-
-        var result strings.Builder
-        result.WriteString(hrp)
-        result.WriteByte('1')
-        for _, v := range combined {
-                result.WriteByte(bech32Alphabet[v])
-        }
-
-        return result.String(), nil
-}
-
-// Bech32Decode decodes a bech32 string, returning the HRP and data.
-func Bech32Decode(s string) (string, []byte, error) {
-        s = strings.ToLower(s)
-
-        pos := strings.LastIndexByte(s, '1')
-        if pos < 1 || pos+7 > len(s) {
-                return "", nil, fmt.Errorf("invalid bech32 string")
-        }
-
-        hrp := s[:pos]
-        dataStr := s[pos+1:]
-
-        data := make([]int, len(dataStr))
-        for i, c := range dataStr {
-                val := bech32AlphabetMap[c]
-                if val == -1 {
-                        return "", nil, fmt.Errorf("invalid character: %c", c)
-                }
-                data[i] = int(val)
-        }
-
-        if !bech32VerifyChecksum(hrp, data) {
-                return "", nil, fmt.Errorf("invalid checksum")
-        }
-
-        // Remove checksum
-        data = data[:len(data)-6]
-
-        // Convert from 5-bit to 8-bit
-        result, err := convertBits(intSliceToBytes(data), 5, 8, false)
-        if err != nil {
-                return "", nil, err
-        }
-
-        bytes := make([]byte, len(result))
-        for i, v := range result {
-                bytes[i] = byte(v)
-        }
-
-        return hrp, bytes, nil
-}
-
-func intSliceToBytes(data []int) []byte {
-        result := make([]byte, len(data))
-        for i, v := range data {
-                result[i] = byte(v)
-        }
-        return result
-}