Public Key

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A Public Key

A public key is a string of code used to encrypt messages and read digital signatures in public key cryptography. Public keys are called "Public Keys" because they may be shared freely without risk - that is to say, a [private key]] cannot be reverse engineered from a public key. Here at gWebs we encourage our users to put their public keys on their blogs and websites so that people contacting them for the first time can use encrypted messages to email them.

Key Length

Generally speaking, the longer the key, the more secure it is. According to Microsoft, the minimum length of public keys recommended for use is 512 bits. However, to protect valuable information or highly confidential communications, it is recommended that users utilize public keys longer than 512 bits when the option is available.

Some tech experts caution that the longer the public and private keys, the more computer processing power is needed to encrypt and decrypt the data. In today's computing environment, computers are powerful enough that this has become a trivial consideration. However, key generation longer the 1024 bits may take several minutes, even on today's computers.

MailCloak supports public and private keys up to 4096 bits.

Uses

Public keys can be used for two functions: encrypting messages and verifying digital signatures.

An Example Public Key


BEGIN PGP PUBLIC KEY BLOCK-----

Version: GnuPG v1.4.9 (MingW32) Comment: powered by http://www.gwebs.com/ Comment: Support@gwebs.com

mQGiBEhtgRARBAD2a52M6eC07CzBomJwlzU81cDtQJvGdc0Q35j7Ga4EE35TmRkb XmzgkHAMBYeII9EZQJ3dQ+6jS8yeXjPMWbr9gcmzeiyyjo4V0U8eXP4dLTRkcMsC JgcqFJIHBAnE8HoAhtlSnCCJpBzK3K2doqnQg9F+dvva+wYDkuvyNVHAhwCgyDa5 0kST3Vsv2vEh0nTU9IFkSDsEAOfGxAxJAboqdfMKIgoVXhomvwWrAvR1pV+jP+6G Drg3xwvU2N8ntRkhGp9N9YPpXIRszW1aAEvp5HqDHQSNv0N3SEUnyI8HFeEudWG6 5BdzTa2bBQ2KbNCxLElPrf33EfEJ2xaC1uOjuvxnjFN5E/qP12IVkdQaaK3aN2TE BkLCBACTZeQT9Yli/dTV79XWc7gv4v9tiy827XPCciuoCB+9zdxyjbIN1HVYdIOb E8wK/r7YAzT+Cx9KjMfwDrqpTRGTaxgo3Pd6si4KfuWvjw/RliLhugUVySavKMpw LqSRyCpCJq+S9puJn7guWV8652gaJTcnadskmZHcXlQYAjRUSrQjQWxleC5NaWxs ZXIgPEFsZXguTWlsbGVyQGd3ZWJzLmNvbT6IYAQTEQIAIAUCSH2rsAIbIwYLCQgH AwIEFQIIAwQWAgMBAh4BAheAAAoJEDAV1sJw3Q9tJ5AAnAw8B/q/srbNyPw74x09 b3KRzVuTAJ9umxfoENH2m4G5mMKM0d4nr7DWJbQWYWxleF8gPGFsZXhAZ3dlYnMu Y29tPohgBBMRAgAgBQJIfavwAhsjBgsJCAcDAgQVAggDBBYCAwECHgECF4AACgkQ MBXWwnDdD206zgCeKQIUISbykKVmlpYy9zWMJ8p1CnQAnR8SmLbob0T8uH3S8Lrc FA9Npa96uQENBEhtgRAQBAC044uwUZiA+oi6Z67wGcAO0nXWR2XUru9Y4WPRXuCQ Lnt1HHQrDnQoELh2yhZJZOULg1g5ZODKum8TlCaBGbz2negh3PsaO7iYtGxi7S7F Dxqx6ZUZilpw7vMGetHe0/4S/FnlQ/xjAmAjZDdP0oj4qDx/loEidfLFECdgmzju awADBQQAoxZCOBNZ9zvhaacrb5DIMBkS85v4juwxbqG+dUuI170rYud7eb1BOGON R7oETO90HajwFICZVbB8HL5NwPXShTCplGzQS+bpUoSxeELQAG32CzNimxo/hHyp byjDJ286cKGDTU/EONT062wNv1xSyYA53Tcxc8CPyBOMw3fNVXeISQQYEQIACQUC SG2BEAIbDAAKCRAwFdbCcN0PbY4mAJ9U36Afk0WGsS2+R67JRVQlclLUuACgjThC uUaH4VVAw79UIdVKmy2BnXo= =SfXo


END PGP PUBLIC KEY BLOCK-----
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