int PEM_SealInit(PEM_ENCODE_SEAL_CTX *ctx, EVP_CIPHER *type,
EVP_MD *md_type, unsigned char **ek, int *ekl,
unsigned char *iv, EVP_PKEY **pubk, int npubk);
int PEM_SealInit(PEM_ENCODE_SEAL_CTX *ctx, EVP_CIPHER *type,
EVP_MD *md_type, unsigned char **ek, int *ekl,
unsigned char *iv, EVP_PKEY **pubk, int npubk);