Base64

Use base64() on string fields to require a valid base64-encoded string.

Teki schema = Teki.fromRules(
    string("payload").required().base64()
);

Pass true for the URL-safe variant (-_ alphabet, no padding):

string("token").required().base64(true)

An empty string is treated as valid base64. For the standard variant, the string length must be a multiple of four. Mixed alphabets are rejected — a standard base64 string may not contain - or _, and a URL-safe string may not contain + or /.

Available on

• string(...)

Annotation equivalent

import dev.ditsche.teki.annotation.Base64;

public class UploadRequest {
    @Base64
    private String payload;

    @Base64(urlSafe = true)
    private String token;
}