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Diffstat (limited to 'crypto/src/util/encoders/UrlBase64Encoder.cs')
| -rw-r--r-- | crypto/src/util/encoders/UrlBase64Encoder.cs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/crypto/src/util/encoders/UrlBase64Encoder.cs b/crypto/src/util/encoders/UrlBase64Encoder.cs new file mode 100644 index 000000000..5611a831c --- /dev/null +++ b/crypto/src/util/encoders/UrlBase64Encoder.cs @@ -0,0 +1,31 @@ +using System; +using System.IO; + +namespace Org.BouncyCastle.Utilities.Encoders +{ + /** + * Convert binary data to and from UrlBase64 encoding. This is identical to + * Base64 encoding, except that the padding character is "." and the other + * non-alphanumeric characters are "-" and "_" instead of "+" and "/". + * <p> + * The purpose of UrlBase64 encoding is to provide a compact encoding of binary + * data that is safe for use as an URL parameter. Base64 encoding does not + * produce encoded values that are safe for use in URLs, since "/" can be + * interpreted as a path delimiter; "+" is the encoded form of a space; and + * "=" is used to separate a name from the corresponding value in an URL + * parameter. + * </p> + */ + public class UrlBase64Encoder + : Base64Encoder + { + public UrlBase64Encoder() + { + encodingTable[encodingTable.Length - 2] = (byte) '-'; + encodingTable[encodingTable.Length - 1] = (byte) '_'; + padding = (byte) '.'; + // we must re-create the decoding table with the new encoded values. + InitialiseDecodingTable(); + } + } +} \ No newline at end of file |