1 files changed, 161 insertions, 8 deletions

diff --git a/src/lib/libcrypto/evp/e_rc2.c b/src/lib/libcrypto/evp/e_rc2.c
index b07fafddfd..d91b86dd03 100644
--- a/src/lib/libcrypto/evp/e_rc2.c
+++ b/src/lib/libcrypto/evp/e_rc2.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: e_rc2.c,v 1.14 2022/01/20 11:31:37 inoguchi Exp $ */
+/* $OpenBSD: e_rc2.c,v 1.15 2022/09/03 19:59:32 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -84,13 +84,166 @@ typedef struct {
 
 #define data(ctx)       ((EVP_RC2_KEY *)(ctx)->cipher_data)
 
-IMPLEMENT_BLOCK_CIPHER(rc2, ks, RC2, EVP_RC2_KEY, NID_rc2,
-    8,
-    RC2_KEY_LENGTH, 8, 64,
-    EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT,
-    rc2_init_key, NULL,
-    rc2_set_asn1_type_and_iv, rc2_get_asn1_type_and_iv,
-    rc2_ctrl)
+static int
+rc2_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl)
+{
+        while (inl >= EVP_MAXCHUNK) {
+                RC2_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &((EVP_RC2_KEY *)ctx->cipher_data)->ks, ctx->iv, ctx->encrypt);
+                inl -= EVP_MAXCHUNK;
+                in += EVP_MAXCHUNK;
+                out += EVP_MAXCHUNK;
+        }
+
+        if (inl)
+                RC2_cbc_encrypt(in, out, (long)inl, &((EVP_RC2_KEY *)ctx->cipher_data)->ks, ctx->iv, ctx->encrypt);
+
+        return 1;
+}
+
+static int
+rc2_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl)
+{
+        size_t chunk = EVP_MAXCHUNK;
+
+        if (64 == 1)
+                chunk >>= 3;
+
+        if (inl < chunk)
+                chunk = inl;
+
+        while (inl && inl >= chunk) {
+                RC2_cfb64_encrypt(in, out, (long)((64 == 1) && !(ctx->flags & EVP_CIPH_FLAG_LENGTH_BITS) ? inl * 8 : inl), &((EVP_RC2_KEY *)ctx->cipher_data)->ks, ctx->iv, &ctx->num, ctx->encrypt);
+                inl -= chunk;
+                in += chunk;
+                out += chunk;
+                if (inl < chunk)
+                        chunk = inl;
+        }
+
+        return 1;
+}
+
+static int
+rc2_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl)
+{
+        size_t i, bl;
+
+        bl = ctx->cipher->block_size;
+
+        if (inl < bl)
+                return 1;
+
+        inl -= bl;
+
+        for (i = 0; i <= inl; i += bl)
+                RC2_ecb_encrypt(in + i, out + i, &((EVP_RC2_KEY *)ctx->cipher_data)->ks, ctx->encrypt);
+
+        return 1;
+}
+
+static int
+rc2_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl)
+{
+        while (inl >= EVP_MAXCHUNK) {
+                RC2_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, &((EVP_RC2_KEY *)ctx->cipher_data)->ks, ctx->iv, &ctx->num);
+                inl -= EVP_MAXCHUNK;
+                in += EVP_MAXCHUNK;
+                out += EVP_MAXCHUNK;
+        }
+
+        if (inl)
+                RC2_ofb64_encrypt(in, out, (long)inl, &((EVP_RC2_KEY *)ctx->cipher_data)->ks, ctx->iv, &ctx->num);
+
+        return 1;
+}
+
+static const EVP_CIPHER rc2_cbc = {
+        .nid = NID_rc2_cbc,
+        .block_size = 8,
+        .key_len = RC2_KEY_LENGTH,
+        .iv_len = 8,
+        .flags = EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT | EVP_CIPH_CBC_MODE,
+        .init = rc2_init_key,
+        .do_cipher = rc2_cbc_cipher,
+        .cleanup = NULL,
+        .ctx_size = sizeof(EVP_RC2_KEY),
+        .set_asn1_parameters = rc2_set_asn1_type_and_iv,
+        .get_asn1_parameters = rc2_get_asn1_type_and_iv,
+        .ctrl = rc2_ctrl,
+        .app_data = NULL,
+};
+
+const EVP_CIPHER *
+EVP_rc2_cbc(void)
+{
+        return &rc2_cbc;
+}
+
+static const EVP_CIPHER rc2_cfb64 = {
+        .nid = NID_rc2_cfb64,
+        .block_size = 1,
+        .key_len = RC2_KEY_LENGTH,
+        .iv_len = 8,
+        .flags = EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT | EVP_CIPH_CFB_MODE,
+        .init = rc2_init_key,
+        .do_cipher = rc2_cfb64_cipher,
+        .cleanup = NULL,
+        .ctx_size = sizeof(EVP_RC2_KEY),
+        .set_asn1_parameters = rc2_set_asn1_type_and_iv,
+        .get_asn1_parameters = rc2_get_asn1_type_and_iv,
+        .ctrl = rc2_ctrl,
+        .app_data = NULL,
+};
+
+const EVP_CIPHER *
+EVP_rc2_cfb64(void)
+{
+        return &rc2_cfb64;
+}
+
+static const EVP_CIPHER rc2_ofb = {
+        .nid = NID_rc2_ofb64,
+        .block_size = 1,
+        .key_len = RC2_KEY_LENGTH,
+        .iv_len = 8,
+        .flags = EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT | EVP_CIPH_OFB_MODE,
+        .init = rc2_init_key,
+        .do_cipher = rc2_ofb_cipher,
+        .cleanup = NULL,
+        .ctx_size = sizeof(EVP_RC2_KEY),
+        .set_asn1_parameters = rc2_set_asn1_type_and_iv,
+        .get_asn1_parameters = rc2_get_asn1_type_and_iv,
+        .ctrl = rc2_ctrl,
+        .app_data = NULL,
+};
+
+const EVP_CIPHER *
+EVP_rc2_ofb(void)
+{
+        return &rc2_ofb;
+}
+
+static const EVP_CIPHER rc2_ecb = {
+        .nid = NID_rc2_ecb,
+        .block_size = 8,
+        .key_len = RC2_KEY_LENGTH,
+        .iv_len = 0,
+        .flags = EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT | EVP_CIPH_ECB_MODE,
+        .init = rc2_init_key,
+        .do_cipher = rc2_ecb_cipher,
+        .cleanup = NULL,
+        .ctx_size = sizeof(EVP_RC2_KEY),
+        .set_asn1_parameters = rc2_set_asn1_type_and_iv,
+        .get_asn1_parameters = rc2_get_asn1_type_and_iv,
+        .ctrl = rc2_ctrl,
+        .app_data = NULL,
+};
+
+const EVP_CIPHER *
+EVP_rc2_ecb(void)
+{
+        return &rc2_ecb;
+}
 
 #define RC2_40_MAGIC    0xa0
 #define RC2_64_MAGIC    0x78