Return CRT exponent d mod (p-1) without duplicating it (deprecated).
Declared in <openssl/rsa.h>
<openssl/rsa.h>
[[deprecated]] BIGNUM const* RSA_get0_dmp1(RSA const* r);
Deprecated. Use of this entity is allowed but discouraged.
Internal BIGNUM pointer for dmp1, or NULL if unset; do not free.