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Hash key may refer to: Number sign , also known as the number, pound or hash key, a key on a telephone keypad For its use in data structure, database and cryptographic applications, see hash function or unique key
These two keys are commonly labelled star, , and number sign/hash, #, respectively, and produce the signals associated with those symbols. These keys were added to provide signals for anticipated data entry purposes in business applications, but found use in Custom Calling Services (CLASS) features installed in electronic switching systems .
"Hex" is commonly used in Singapore and Malaysia, as spoken by many recorded telephone directory-assistance menus: "Please enter your phone number followed by the 'hex' key". The term "hex" is discouraged in Singapore in favour of "hash". In Singapore, a hash is also called "hex" in apartment addresses, where it precedes the floor number. [30] [31]
A vertical service code (VSC) is a sequence of digits and the signals star (*) and pound/hash (#) dialed on a telephone keypad or rotary dial to access certain telephone service features. [1] Some vertical service codes require dialing of a telephone number after the code sequence.
E.161 is an ITU-T Recommendation that defines the arrangement of digits, letters, and symbols on telephone keypads and rotary dials.It also defines the recommended mapping between the basic Latin alphabet and digits (e.g., "DEF" on 3). [1]
Transmission security key (TSK) Trunk encryption device (TED) Types 1, 2, 3, and 4 encryption; Unique key; VoIP VPN – combines voice over IP and virtual private network technologies to offer a method for delivering secure voice. ZRTP – a cryptographic key-agreement protocol used in Voice over Internet Protocol (VoIP) phone telephony. [4]
Token Generation is the process of producing a token using any means, such as mathematically reversible cryptographic functions based on strong encryption algorithms and key management mechanisms, one-way nonreversible cryptographic functions (e.g., a hash function with strong, secret salt), or assignment via a randomly generated number.
These tokens transfer a key sequence to the local client or to a nearby access point. [4] Alternatively, another form of token that has been widely available for many years is a mobile device which communicates using an out-of-band channel (like voice, SMS, or USSD). Still other tokens plug into the computer and may require a PIN.