373         let mut estimate = 4;  in estimate_size()  localVariable
378             estimate += 4 + 32;  in estimate_size()
380             estimate += 4 + 48;  in estimate_size()
385             estimate += 4 + 32; // keyhash  in estimate_size()
386             estimate += 4 + 256; // RSA2048  in estimate_size()
389             estimate += 4 + 32; // keyhash  in estimate_size()
390             estimate += 4 + 384; // RSA3072  in estimate_size()
393             estimate += 4 + 32; // keyhash  in estimate_size()
394             estimate += 4 + 64; // ED25519 signature.  in estimate_size()
402                 estimate += 4 + 48;  // SHA384  in estimate_size()
403                 estimate += 4 + 104; // ECDSA384 (varies)  in estimate_size()
405                 estimate += 4 + 32;  // SHA256  in estimate_size()
406                 estimate += 4 + 72;  // ECDSA256 (varies)  in estimate_size()
415             estimate += 4 + 256;  in estimate_size()
418             estimate += 4 + if aes256 { 40 } else { 24 };  in estimate_size()
421             estimate += 4 + if aes256 { 129 } else { 113 };  in estimate_size()
424             estimate += 4 + if aes256 { 96 } else { 80 };  in estimate_size()
428         estimate += self.protect_size() as usize;  in estimate_size()
430         estimate  in estimate_size()