void asn1_bit_der(const unsigned char * str, int bit_len, unsigned char * der, int * der_len);
- const unsigned char * str
- int bit_len
number of meaningful bits in STR.
- unsigned char * der
- int * der_len
number of meaningful bytes of DER (der..der[ans_len-1]).
Creates a length-value DER encoding for the input data as it would have been for a BIT STRING. The DER encoded data will be copied in der .
Note that the BIT STRING tag is not included in the output.
This function does not return any value because it is expected that der_len will contain enough bytes to store the string plus the DER encoding. The DER encoding size can be obtained using asn1_length_der().
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