RSA key bit length.
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Specifies the bit length of the public modulus m.
The setting is required.
What key length should be used for SSL certificates?
- 384
Too weak, this key length MUST not be used, unless you know what you are doing.
- 512
Too weak, this key length MUST not be used, unless you know what you are doing.
- 1024
The 1024 key bit length is used by most companies. However it is recommnded to upgrade to a key bit length of 2048.
RSA claims that 1024-bit keys are likely to become crackable between 2006 and 2010.
- 2048
This is the recommended key bit length to be used for companies.
RSA claims that 2048-bit keys are sufficient until 2030.
- 3072
An RSA key length of 3072 bits should be used if security is required beyond 2030.
Note 1: The certificate in the picture is using a key bit length of 1024.
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