fix(base64): encode: incorrect padding if size % 3 == 2

2024-09-28 13:21:42 +03:00
parent bce26d3a4b
commit 71ff3d4260
4 changed files with 7 additions and 9 deletions
--- a/src/base64.cpp
+++ b/src/base64.cpp
@ -85,7 +85,7 @@ namespace base64
        case 2:
            str[last_idx] = digits[data[data_size - 2] >> 2];
            str[last_idx + 1] = digits[(data[data_size - 2] << 4 | data[data_size - 1] >> 4) & 0x3F];
-            str[last_idx + 2] = digits[data[data_size - 1] & 0x0F];
+            str[last_idx + 2] = digits[data[data_size - 1] << 2 & 0x3F];
            str[last_idx + 3] = '=';
            break;
        default: