Squashed 'lib/mbedtls/external/mbedtls/' content from commit 2ca6c285a0dd

git-subtree-dir: lib/mbedtls/external/mbedtls
git-subtree-split: 2ca6c285a0dd3f33982dd57299012dacab1ff206

1 files changed, 437 insertions, 0 deletions

diff --git a/library/pkcs12.c b/library/pkcs12.c
new file mode 100644
index 00000000000..a3467b98208
--- /dev/null
+++ b/library/pkcs12.c
@@ -0,0 +1,437 @@
+/*
+ *  PKCS#12 Personal Information Exchange Syntax
+ *
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+/*
+ *  The PKCS #12 Personal Information Exchange Syntax Standard v1.1
+ *
+ *  http://www.rsa.com/rsalabs/pkcs/files/h11301-wp-pkcs-12v1-1-personal-information-exchange-syntax.pdf
+ *  ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-12/pkcs-12v1-1.asn
+ */
+
+#include "common.h"
+
+#if defined(MBEDTLS_PKCS12_C)
+
+#include "mbedtls/pkcs12.h"
+#include "mbedtls/asn1.h"
+#if defined(MBEDTLS_CIPHER_C)
+#include "mbedtls/cipher.h"
+#endif /* MBEDTLS_CIPHER_C */
+#include "mbedtls/platform_util.h"
+#include "mbedtls/error.h"
+
+#include <string.h>
+
+#if defined(MBEDTLS_DES_C)
+#include "mbedtls/des.h"
+#endif
+
+#include "psa_util_internal.h"
+
+#if defined(MBEDTLS_ASN1_PARSE_C) && defined(MBEDTLS_CIPHER_C)
+
+static int pkcs12_parse_pbe_params(mbedtls_asn1_buf *params,
+                                   mbedtls_asn1_buf *salt, int *iterations)
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    unsigned char **p = &params->p;
+    const unsigned char *end = params->p + params->len;
+
+    /*
+     *  pkcs-12PbeParams ::= SEQUENCE {
+     *    salt          OCTET STRING,
+     *    iterations    INTEGER
+     *  }
+     *
+     */
+    if (params->tag != (MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT,
+                                 MBEDTLS_ERR_ASN1_UNEXPECTED_TAG);
+    }
+
+    if ((ret = mbedtls_asn1_get_tag(p, end, &salt->len, MBEDTLS_ASN1_OCTET_STRING)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT, ret);
+    }
+
+    salt->p = *p;
+    *p += salt->len;
+
+    if ((ret = mbedtls_asn1_get_int(p, end, iterations)) != 0) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT, ret);
+    }
+
+    if (*p != end) {
+        return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT,
+                                 MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
+    }
+
+    return 0;
+}
+
+#define PKCS12_MAX_PWDLEN 128
+
+static int pkcs12_pbe_derive_key_iv(mbedtls_asn1_buf *pbe_params, mbedtls_md_type_t md_type,
+                                    const unsigned char *pwd,  size_t pwdlen,
+                                    unsigned char *key, size_t keylen,
+                                    unsigned char *iv,  size_t ivlen)
+{
+    int ret, iterations = 0;
+    mbedtls_asn1_buf salt;
+    size_t i;
+    unsigned char unipwd[PKCS12_MAX_PWDLEN * 2 + 2];
+
+    if (pwdlen > PKCS12_MAX_PWDLEN) {
+        return MBEDTLS_ERR_PKCS12_BAD_INPUT_DATA;
+    }
+
+    memset(&salt, 0, sizeof(mbedtls_asn1_buf));
+    memset(&unipwd, 0, sizeof(unipwd));
+
+    if ((ret = pkcs12_parse_pbe_params(pbe_params, &salt,
+                                       &iterations)) != 0) {
+        return ret;
+    }
+
+    for (i = 0; i < pwdlen; i++) {
+        unipwd[i * 2 + 1] = pwd[i];
+    }
+
+    if ((ret = mbedtls_pkcs12_derivation(key, keylen, unipwd, pwdlen * 2 + 2,
+                                         salt.p, salt.len, md_type,
+                                         MBEDTLS_PKCS12_DERIVE_KEY, iterations)) != 0) {
+        return ret;
+    }
+
+    if (iv == NULL || ivlen == 0) {
+        return 0;
+    }
+
+    if ((ret = mbedtls_pkcs12_derivation(iv, ivlen, unipwd, pwdlen * 2 + 2,
+                                         salt.p, salt.len, md_type,
+                                         MBEDTLS_PKCS12_DERIVE_IV, iterations)) != 0) {
+        return ret;
+    }
+    return 0;
+}
+
+#undef PKCS12_MAX_PWDLEN
+
+#if !defined(MBEDTLS_CIPHER_PADDING_PKCS7)
+int mbedtls_pkcs12_pbe_ext(mbedtls_asn1_buf *pbe_params, int mode,
+                           mbedtls_cipher_type_t cipher_type, mbedtls_md_type_t md_type,
+                           const unsigned char *pwd,  size_t pwdlen,
+                           const unsigned char *data, size_t len,
+                           unsigned char *output, size_t output_size,
+                           size_t *output_len);
+#endif
+
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
+int mbedtls_pkcs12_pbe(mbedtls_asn1_buf *pbe_params, int mode,
+                       mbedtls_cipher_type_t cipher_type, mbedtls_md_type_t md_type,
+                       const unsigned char *pwd,  size_t pwdlen,
+                       const unsigned char *data, size_t len,
+                       unsigned char *output)
+{
+    size_t output_len = 0;
+
+    /* We assume caller of the function is providing a big enough output buffer
+     * so we pass output_size as SIZE_MAX to pass checks, However, no guarantees
+     * for the output size actually being correct.
+     */
+    return mbedtls_pkcs12_pbe_ext(pbe_params, mode, cipher_type, md_type,
+                                  pwd, pwdlen, data, len, output, SIZE_MAX,
+                                  &output_len);
+}
+#endif
+
+int mbedtls_pkcs12_pbe_ext(mbedtls_asn1_buf *pbe_params, int mode,
+                           mbedtls_cipher_type_t cipher_type, mbedtls_md_type_t md_type,
+                           const unsigned char *pwd,  size_t pwdlen,
+                           const unsigned char *data, size_t len,
+                           unsigned char *output, size_t output_size,
+                           size_t *output_len)
+{
+    int ret, keylen = 0;
+    unsigned char key[32];
+    unsigned char iv[16];
+    const mbedtls_cipher_info_t *cipher_info;
+    mbedtls_cipher_context_t cipher_ctx;
+    size_t iv_len = 0;
+    size_t finish_olen = 0;
+    unsigned int padlen = 0;
+
+    if (pwd == NULL && pwdlen != 0) {
+        return MBEDTLS_ERR_PKCS12_BAD_INPUT_DATA;
+    }
+
+    cipher_info = mbedtls_cipher_info_from_type(cipher_type);
+    if (cipher_info == NULL) {
+        return MBEDTLS_ERR_PKCS12_FEATURE_UNAVAILABLE;
+    }
+
+    keylen = (int) mbedtls_cipher_info_get_key_bitlen(cipher_info) / 8;
+
+    if (mode == MBEDTLS_PKCS12_PBE_DECRYPT) {
+        if (output_size < len) {
+            return MBEDTLS_ERR_ASN1_BUF_TOO_SMALL;
+        }
+    }
+
+    if (mode == MBEDTLS_PKCS12_PBE_ENCRYPT) {
+        padlen = cipher_info->block_size - (len % cipher_info->block_size);
+        if (output_size < (len + padlen)) {
+            return MBEDTLS_ERR_ASN1_BUF_TOO_SMALL;
+        }
+    }
+
+    iv_len = mbedtls_cipher_info_get_iv_size(cipher_info);
+    if ((ret = pkcs12_pbe_derive_key_iv(pbe_params, md_type, pwd, pwdlen,
+                                        key, keylen,
+                                        iv, iv_len)) != 0) {
+        return ret;
+    }
+
+    mbedtls_cipher_init(&cipher_ctx);
+
+    if ((ret = mbedtls_cipher_setup(&cipher_ctx, cipher_info)) != 0) {
+        goto exit;
+    }
+
+    if ((ret = mbedtls_cipher_setkey(&cipher_ctx, key, 8 * keylen,
+                                     (mbedtls_operation_t) mode)) != 0) {
+        goto exit;
+    }
+
+#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
+    {
+        /* PKCS12 uses CBC with PKCS7 padding */
+        mbedtls_cipher_padding_t padding = MBEDTLS_PADDING_PKCS7;
+#if !defined(MBEDTLS_CIPHER_PADDING_PKCS7)
+        /* For historical reasons, when decrypting, this function works when
+         * decrypting even when support for PKCS7 padding is disabled. In this
+         * case, it ignores the padding, and so will never report a
+         * password mismatch.
+         */
+        if (mode == MBEDTLS_PKCS12_PBE_DECRYPT) {
+            padding = MBEDTLS_PADDING_NONE;
+        }
+#endif
+        if ((ret = mbedtls_cipher_set_padding_mode(&cipher_ctx, padding)) != 0) {
+            goto exit;
+        }
+    }
+#endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */
+
+    ret = mbedtls_cipher_crypt(&cipher_ctx, iv, iv_len, data, len, output, &finish_olen);
+    if (ret == MBEDTLS_ERR_CIPHER_INVALID_PADDING) {
+        ret = MBEDTLS_ERR_PKCS12_PASSWORD_MISMATCH;
+    }
+
+    *output_len += finish_olen;
+
+exit:
+    mbedtls_platform_zeroize(key, sizeof(key));
+    mbedtls_platform_zeroize(iv,  sizeof(iv));
+    mbedtls_cipher_free(&cipher_ctx);
+
+    return ret;
+}
+
+#endif /* MBEDTLS_ASN1_PARSE_C && MBEDTLS_CIPHER_C */
+
+static void pkcs12_fill_buffer(unsigned char *data, size_t data_len,
+                               const unsigned char *filler, size_t fill_len)
+{
+    unsigned char *p = data;
+    size_t use_len;
+
+    if (filler != NULL && fill_len != 0) {
+        while (data_len > 0) {
+            use_len = (data_len > fill_len) ? fill_len : data_len;
+            memcpy(p, filler, use_len);
+            p += use_len;
+            data_len -= use_len;
+        }
+    } else {
+        /* If either of the above are not true then clearly there is nothing
+         * that this function can do. The function should *not* be called
+         * under either of those circumstances, as you could end up with an
+         * incorrect output but for safety's sake, leaving the check in as
+         * otherwise we could end up with memory corruption.*/
+    }
+}
+
+
+static int calculate_hashes(mbedtls_md_type_t md_type, int iterations,
+                            unsigned char *diversifier, unsigned char *salt_block,
+                            unsigned char *pwd_block, unsigned char *hash_output, int use_salt,
+                            int use_password, size_t hlen, size_t v)
+{
+    int ret = -1;
+    size_t i;
+    const mbedtls_md_info_t *md_info;
+    mbedtls_md_context_t md_ctx;
+    md_info = mbedtls_md_info_from_type(md_type);
+    if (md_info == NULL) {
+        return MBEDTLS_ERR_PKCS12_FEATURE_UNAVAILABLE;
+    }
+
+    mbedtls_md_init(&md_ctx);
+
+    if ((ret = mbedtls_md_setup(&md_ctx, md_info, 0)) != 0) {
+        return ret;
+    }
+    // Calculate hash( diversifier || salt_block || pwd_block )
+    if ((ret = mbedtls_md_starts(&md_ctx)) != 0) {
+        goto exit;
+    }
+
+    if ((ret = mbedtls_md_update(&md_ctx, diversifier, v)) != 0) {
+        goto exit;
+    }
+
+    if (use_salt != 0) {
+        if ((ret = mbedtls_md_update(&md_ctx, salt_block, v)) != 0) {
+            goto exit;
+        }
+    }
+
+    if (use_password != 0) {
+        if ((ret = mbedtls_md_update(&md_ctx, pwd_block, v)) != 0) {
+            goto exit;
+        }
+    }
+
+    if ((ret = mbedtls_md_finish(&md_ctx, hash_output)) != 0) {
+        goto exit;
+    }
+
+    // Perform remaining ( iterations - 1 ) recursive hash calculations
+    for (i = 1; i < (size_t) iterations; i++) {
+        if ((ret = mbedtls_md(md_info, hash_output, hlen, hash_output))
+            != 0) {
+            goto exit;
+        }
+    }
+
+exit:
+    mbedtls_md_free(&md_ctx);
+    return ret;
+}
+
+
+int mbedtls_pkcs12_derivation(unsigned char *data, size_t datalen,
+                              const unsigned char *pwd, size_t pwdlen,
+                              const unsigned char *salt, size_t saltlen,
+                              mbedtls_md_type_t md_type, int id, int iterations)
+{
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+    unsigned int j;
+
+    unsigned char diversifier[128];
+    unsigned char salt_block[128], pwd_block[128], hash_block[128] = { 0 };
+    unsigned char hash_output[MBEDTLS_MD_MAX_SIZE];
+    unsigned char *p;
+    unsigned char c;
+    int           use_password = 0;
+    int           use_salt = 0;
+
+    size_t hlen, use_len, v, i;
+
+    // This version only allows max of 64 bytes of password or salt
+    if (datalen > 128 || pwdlen > 64 || saltlen > 64) {
+        return MBEDTLS_ERR_PKCS12_BAD_INPUT_DATA;
+    }
+
+    if (pwd == NULL && pwdlen != 0) {
+        return MBEDTLS_ERR_PKCS12_BAD_INPUT_DATA;
+    }
+
+    if (salt == NULL && saltlen != 0) {
+        return MBEDTLS_ERR_PKCS12_BAD_INPUT_DATA;
+    }
+
+    use_password = (pwd && pwdlen != 0);
+    use_salt = (salt && saltlen != 0);
+
+    hlen = mbedtls_md_get_size_from_type(md_type);
+
+    if (hlen <= 32) {
+        v = 64;
+    } else {
+        v = 128;
+    }
+
+    memset(diversifier, (unsigned char) id, v);
+
+    if (use_salt != 0) {
+        pkcs12_fill_buffer(salt_block, v, salt, saltlen);
+    }
+
+    if (use_password != 0) {
+        pkcs12_fill_buffer(pwd_block,  v, pwd,  pwdlen);
+    }
+
+    p = data;
+    while (datalen > 0) {
+        if (calculate_hashes(md_type, iterations, diversifier, salt_block,
+                             pwd_block, hash_output, use_salt, use_password, hlen,
+                             v) != 0) {
+            goto exit;
+        }
+
+        use_len = (datalen > hlen) ? hlen : datalen;
+        memcpy(p, hash_output, use_len);
+        datalen -= use_len;
+        p += use_len;
+
+        if (datalen == 0) {
+            break;
+        }
+
+        // Concatenating copies of hash_output into hash_block (B)
+        pkcs12_fill_buffer(hash_block, v, hash_output, hlen);
+
+        // B += 1
+        for (i = v; i > 0; i--) {
+            if (++hash_block[i - 1] != 0) {
+                break;
+            }
+        }
+
+        if (use_salt != 0) {
+            // salt_block += B
+            c = 0;
+            for (i = v; i > 0; i--) {
+                j = salt_block[i - 1] + hash_block[i - 1] + c;
+                c = MBEDTLS_BYTE_1(j);
+                salt_block[i - 1] = MBEDTLS_BYTE_0(j);
+            }
+        }
+
+        if (use_password != 0) {
+            // pwd_block  += B
+            c = 0;
+            for (i = v; i > 0; i--) {
+                j = pwd_block[i - 1] + hash_block[i - 1] + c;
+                c = MBEDTLS_BYTE_1(j);
+                pwd_block[i - 1] = MBEDTLS_BYTE_0(j);
+            }
+        }
+    }
+
+    ret = 0;
+
+exit:
+    mbedtls_platform_zeroize(salt_block, sizeof(salt_block));
+    mbedtls_platform_zeroize(pwd_block, sizeof(pwd_block));
+    mbedtls_platform_zeroize(hash_block, sizeof(hash_block));
+    mbedtls_platform_zeroize(hash_output, sizeof(hash_output));
+
+    return ret;
+}
+
+#endif /* MBEDTLS_PKCS12_C */