diff options
Diffstat (limited to 'src/libstrongswan/plugins/gcrypt/gcrypt_rsa_public_key.c')
-rw-r--r-- | src/libstrongswan/plugins/gcrypt/gcrypt_rsa_public_key.c | 109 |
1 files changed, 27 insertions, 82 deletions
diff --git a/src/libstrongswan/plugins/gcrypt/gcrypt_rsa_public_key.c b/src/libstrongswan/plugins/gcrypt/gcrypt_rsa_public_key.c index d9d4b8299..5850ace94 100644 --- a/src/libstrongswan/plugins/gcrypt/gcrypt_rsa_public_key.c +++ b/src/libstrongswan/plugins/gcrypt/gcrypt_rsa_public_key.c @@ -295,11 +295,35 @@ static void destroy(private_gcrypt_rsa_public_key_t *this) } /** - * Generic private constructor + * See header. */ -static private_gcrypt_rsa_public_key_t *gcrypt_rsa_public_key_create_empty() +gcrypt_rsa_public_key_t *gcrypt_rsa_public_key_load(key_type_t type, + va_list args) { - private_gcrypt_rsa_public_key_t *this = malloc_thing(private_gcrypt_rsa_public_key_t); + private_gcrypt_rsa_public_key_t *this; + gcry_error_t err; + chunk_t n, e; + + n = e = chunk_empty; + while (TRUE) + { + switch (va_arg(args, builder_part_t)) + { + case BUILD_RSA_MODULUS: + n = va_arg(args, chunk_t); + continue; + case BUILD_RSA_PUB_EXP: + e = va_arg(args, chunk_t); + continue; + case BUILD_END: + break; + default: + return NULL; + } + break; + } + + this = malloc_thing(private_gcrypt_rsa_public_key_t); this->public.interface.get_type = (key_type_t (*)(public_key_t *this))get_type; this->public.interface.verify = (bool (*)(public_key_t *this, signature_scheme_t scheme, chunk_t data, chunk_t signature))verify; @@ -314,18 +338,6 @@ static private_gcrypt_rsa_public_key_t *gcrypt_rsa_public_key_create_empty() this->key = NULL; this->ref = 1; - return this; -} - -/** - * Load a public key from components - */ -static gcrypt_rsa_public_key_t *load(chunk_t n, chunk_t e) -{ - private_gcrypt_rsa_public_key_t *this; - gcry_error_t err; - - this = gcrypt_rsa_public_key_create_empty(); err = gcry_sexp_build(&this->key, NULL, "(public-key(rsa(n %b)(e %b)))", n.len, n.ptr, e.len, e.ptr); if (err) @@ -334,73 +346,6 @@ static gcrypt_rsa_public_key_t *load(chunk_t n, chunk_t e) free(this); return NULL; } - return &this->public; -} - -typedef struct private_builder_t private_builder_t; - -/** - * Builder implementation for key loading - */ -struct private_builder_t { - /** implements the builder interface */ - builder_t public; - /** rsa key parameters */ - chunk_t n, e; -}; - -/** - * Implementation of builder_t.build - */ -static gcrypt_rsa_public_key_t *build(private_builder_t *this) -{ - gcrypt_rsa_public_key_t *key; - - key = load(this->n, this->e); - free(this); - return key; -} - -/** - * Implementation of builder_t.add - */ -static void add(private_builder_t *this, builder_part_t part, ...) -{ - va_list args; - - va_start(args, part); - switch (part) - { - case BUILD_RSA_MODULUS: - this->n = va_arg(args, chunk_t); - break; - case BUILD_RSA_PUB_EXP: - this->e = va_arg(args, chunk_t); - break; - default: - builder_cancel(&this->public); - break; - } - va_end(args); -} - -/** - * Builder construction function - */ -builder_t *gcrypt_rsa_public_key_builder(key_type_t type) -{ - private_builder_t *this; - - if (type != KEY_RSA) - { - return NULL; - } - - this = malloc_thing(private_builder_t); - - this->n = this->e = chunk_empty; - this->public.add = (void(*)(builder_t *this, builder_part_t part, ...))add; - this->public.build = (void*(*)(builder_t *this))build; return &this->public; } |