| 1 | ECB |
| DES modes of operation, Electronic Code Book; FIPS Pub 81 (1981); ANSI X3.106; IS 8372 (64 bits); ISO 10116 (n-bits). |
| 2 | CBC |
| DES modes of operation, Cipher Block Chaining; FIPS Pub 81 (1981); ANSI X3.106; IS 8372 (64 bits); ISO 10116 (n-bits). |
| 3 | CFB1 |
| DES modes of operation, Cipher feedback; FIPS Pub 81 (1981); ANSI X3.106; IS 8372 (64 bits); ISO 10116 (n-bits). |
| 4 | CFB8 |
| DES modes of operation, Cipher feedback; FIPS Pub 81 (1981); ANSI X3.106; IS 8372 (64 bits); ISO 10116 (n-bits). |
| 5 | OFB |
| DES modes of operation; FIPS Pub 81 (1981); IS 8372 (64 bits); ISO 10116 (n-bits). |
| 16 | DSMR |
| Digital Signature scheme giving Message Recovery. ISO 9796. |
| 17 | CFB64 |
| DES mode of operation, cipher feedback; ISO 10116 (n-bits). |
| 23 | TCBC |
| TDEA mode of operation, Cipher Block Chaining, ANSI X9.52. |
| 24 | TCBC-I |
| TDEA mode of operation, Cipher Block Chaining -Interleaved, ANSI X9.52. |
| 25 | TCFB1 |
| TDEA mode of operation, Cipher Feedback - 1 bit feedback, ANSI X9.52. |
| 26 | TCFB8 |
| TDEA mode of operation, Cipher Feedback - 8 bit feedback, ANSI X9.52. |
| 27 | TCFB64 |
| TDEA mode of operation, Cipher Feedback - 64 bit feedback, ANSI X9.52. |
| 28 | TCFB1-P |
| TDEA mode of operation, Cipher Feedback Pipelined - 1 bit feedback, ANSI X9.52. |
| 29 | TCFB8-P |
| TDEA mode of operation, Cipher Feedback Pipelined - 8 bit feedback, ANSI X9.52. |
| 30 | TCFB64-P |
| TDEA mode of operation, Cipher Feedback Pipelined - 64 bit feedback, ANSI X9.52. |
| 31 | TOFB |
| TDEA mode of operation, Output Feedback Mode, ANSI X9.52. |
| 32 | TOFB-P |
| TDEA mode of operation, Output Feedback Mode Pipelined, ANSI X9.52. |
| 33 | TCBCM |
| TDEA mode of operation, Cipher Block Chaining with output feedback Masking, ANSI X9.52. |
| 34 | TCBCM-I |
| TDEA mode of operation, Cipher Block Chaining with output feedback Masking Interleaved, ANSI X9.52. |
| 35 | TECB |
| TDEA mode of operation, Electronic Cookbook Mode, ANSI X9.52. |
| 36 | CTS |
| RC5 mode of operation, Cipher Text Stealing, Published in RCF 2040. |
| ZZZ | Mutually agreed |
| Mutually agreed between trading partners. |