RT4586: Remove RSA_memory_lock; unused, not needed

Reviewed-by: NBen Laurie <ben@openssl.org>

crypto/rsa/rsa_err.c

@@ -32,7 +32,6 @@ static ERR_STRING_DATA RSA_str_functs[] = {
     {ERR_FUNC(RSA_F_RSA_CHECK_KEY_EX), "RSA_check_key_ex"},
     {ERR_FUNC(RSA_F_RSA_CMS_DECRYPT), "rsa_cms_decrypt"},
     {ERR_FUNC(RSA_F_RSA_ITEM_VERIFY), "rsa_item_verify"},
-    {ERR_FUNC(RSA_F_RSA_MEMORY_LOCK), "RSA_memory_lock"},
     {ERR_FUNC(RSA_F_RSA_METH_DUP), "RSA_meth_dup"},
     {ERR_FUNC(RSA_F_RSA_METH_NEW), "RSA_meth_new"},
     {ERR_FUNC(RSA_F_RSA_METH_SET1_NAME), "RSA_meth_set1_name"},

crypto/rsa/rsa_lib.c

@@ -180,50 +180,6 @@ void *RSA_get_ex_data(const RSA *r, int idx)
     return (CRYPTO_get_ex_data(&r->ex_data, idx));
 }
 
-int RSA_memory_lock(RSA *r)
-{
-    int i, j, k, off;
-    char *p;
-    BIGNUM *bn, **t[6], *b;
-    BN_ULONG *ul;
-
-    if (r->d == NULL)
-        return (1);
-    t[0] = &r->d;
-    t[1] = &r->p;
-    t[2] = &r->q;
-    t[3] = &r->dmp1;
-    t[4] = &r->dmq1;
-    t[5] = &r->iqmp;
-    k = bn_sizeof_BIGNUM() * 6;
-    off = k / sizeof(BN_ULONG) + 1;
-    j = 1;
-    for (i = 0; i < 6; i++)
-        j += bn_get_top(*t[i]);
-    if ((p = OPENSSL_malloc((off + j) * sizeof(*p))) == NULL) {
-        RSAerr(RSA_F_RSA_MEMORY_LOCK, ERR_R_MALLOC_FAILURE);
-        return (0);
-    }
-    memset(p, 0, sizeof(*p) * (off + j));
-    bn = (BIGNUM *)p;
-    ul = (BN_ULONG *)&(p[off]);
-    for (i = 0; i < 6; i++) {
-        b = *(t[i]);
-        *(t[i]) = bn_array_el(bn, i);
-        memcpy(bn_array_el(bn, i), b, bn_sizeof_BIGNUM());
-        memcpy(ul, bn_get_words(b), sizeof(*ul) * bn_get_top(b));
-        bn_set_static_words(bn_array_el(bn, i), ul, bn_get_top(b));
-        ul += bn_get_top(b);
-        BN_clear_free(b);
-    }
-
-    /* I should fix this so it can still be done */
-    r->flags &= ~(RSA_FLAG_CACHE_PRIVATE | RSA_FLAG_CACHE_PUBLIC);
-
-    r->bignum_data = p;
-    return (1);
-}
-
 int RSA_security_bits(const RSA *rsa)
 {
     return BN_security_bits(BN_num_bits(rsa->n), -1);

include/openssl/rsa.h

@@ -226,9 +226,6 @@ const RSA_METHOD *RSA_get_default_method(void);
 const RSA_METHOD *RSA_get_method(const RSA *rsa);
 int RSA_set_method(RSA *rsa, const RSA_METHOD *meth);
 
-/* This function needs the memory locking malloc callbacks to be installed */
-int RSA_memory_lock(RSA *r);
-
 /* these are the actual RSA functions */
 const RSA_METHOD *RSA_PKCS1_OpenSSL(void);
 
@@ -477,7 +474,6 @@ void ERR_load_RSA_strings(void);
 # define RSA_F_RSA_CHECK_KEY_EX                           160
 # define RSA_F_RSA_CMS_DECRYPT                            159
 # define RSA_F_RSA_ITEM_VERIFY                            148
-# define RSA_F_RSA_MEMORY_LOCK                            130
 # define RSA_F_RSA_METH_DUP                               161
 # define RSA_F_RSA_METH_NEW                               162
 # define RSA_F_RSA_METH_SET1_NAME                         163

util/libcrypto.num

@@ -1396,7 +1396,6 @@ SCT_set_timestamp                       1380	1_1_0	EXIST::FUNCTION:CT
 UI_new                                  1381	1_1_0	EXIST::FUNCTION:UI
 TS_REQ_get_msg_imprint                  1382	1_1_0	EXIST::FUNCTION:TS
 i2d_PKCS12_BAGS                         1383	1_1_0	EXIST::FUNCTION:
-RSA_memory_lock                         1384	1_1_0	EXIST::FUNCTION:RSA
 CERTIFICATEPOLICIES_free                1385	1_1_0	EXIST::FUNCTION:
 X509V3_get_section                      1386	1_1_0	EXIST::FUNCTION:
 BIO_parse_hostserv                      1387	1_1_0	EXIST::FUNCTION:SOCK