ETSI algorithms
The following is a list of algorithms developed and administered by ETSI. They may be used subject to certain conditions. Each algorithm in the list includes a link to a confidentiality and restricted usage undertaking. This outlines the conditions under which a license will be granted to use the algorithm.
| Name of Algorithm | Extra Information | Price/ request |
| TETRA - The rules for the management of the encryption algorithms are given below: | ||
 TEA1 | TS 101 053-1 | €1,000 |
| TEA2 (see note) | TS 101 053-2 Note: The Custodian for the TEA2 algorithm is the TCCA SFPG@TCCA.info & not ETSI. | |
| TEA3 | TS 101 053-3 | €1,000 |
| TEA4 | TS 101 053-4 | €1,000 |
| TAA1 | TS 101 052 | €1,000 |
The following older algorithms have been removed from the ETSI site; for enquiries about these algorithms please contact us.
- The DSAA (DECTTM Standard Authentication algorithm)
- The DSC (DECTTM standard cipher)
- TESA-7 (TE9 authentication algorithm)
- USA-4 (UPT authentication algorithm)
- HIPERLAN (High PERformance Local Area Network)
- GSM-CTS (Cordial)
- A5-GMR1 (Encryption Algorithm)