diff --git a/apps/apps.c b/apps/apps.c
index 1bcebc749af5c13c5730eb2d23f7c8bb07a65554..b8d1c5f4b2591bad60cb32dd3c8d402b34b4fd08 100644
--- a/apps/apps.c
+++ b/apps/apps.c
@@ -133,7 +133,7 @@
 #undef NON_MAIN
 
 typedef struct {
-	char *name;
+	const char *name;
 	unsigned long flag;
 	unsigned long mask;
 } NAME_EX_TBL;
@@ -1269,7 +1269,7 @@ static int set_table_opts(unsigned long *flags, const char *arg, const NAME_EX_T
 	return 0;
 }
 
-void print_name(BIO *out, char *title, X509_NAME *nm, unsigned long lflags)
+void print_name(BIO *out, const char *title, X509_NAME *nm, unsigned long lflags)
 {
 	char *buf;
 	char mline = 0;
@@ -1774,7 +1774,7 @@ int index_index(CA_DB *db)
 	return 1;
 	}
 
-int save_index(char *dbfile, char *suffix, CA_DB *db)
+int save_index(const char *dbfile, const char *suffix, CA_DB *db)
 	{
 	char buf[3][BSIZE];
 	BIO *out = BIO_new(BIO_s_file());
@@ -1841,7 +1841,7 @@ int save_index(char *dbfile, char *suffix, CA_DB *db)
 	return 0;
 	}
 
-int rotate_index(char *dbfile, char *new_suffix, char *old_suffix)
+int rotate_index(const char *dbfile, const char *new_suffix, const char *old_suffix)
 	{
 	char buf[5][BSIZE];
 	int i,j;
@@ -2281,7 +2281,8 @@ int args_verify(char ***pargs, int *pargc,
 
 	}
 
-static void nodes_print(BIO *out, char *name, STACK_OF(X509_POLICY_NODE) *nodes)
+static void nodes_print(BIO *out, const char *name,
+	STACK_OF(X509_POLICY_NODE) *nodes)
 	{
 	X509_POLICY_NODE *node;
 	int i;
diff --git a/apps/apps.h b/apps/apps.h
index 7d879637b7d8a33099a4cc7dedf187ffb774ac1c..21544fde439e1fbfe96160da28c9af6b70e00283 100644
--- a/apps/apps.h
+++ b/apps/apps.h
@@ -254,7 +254,7 @@ void program_name(char *in,char *out,int size);
 int chopup_args(ARGS *arg,char *buf, int *argc, char **argv[]);
 #ifdef HEADER_X509_H
 int dump_cert_text(BIO *out, X509 *x);
-void print_name(BIO *out, char *title, X509_NAME *nm, unsigned long lflags);
+void print_name(BIO *out, const char *title, X509_NAME *nm, unsigned long lflags);
 #endif
 int set_cert_ex(unsigned long *flags, const char *arg);
 int set_name_ex(unsigned long *flags, const char *arg);
@@ -280,7 +280,7 @@ char *make_config_name(void);
 
 /* Functions defined in ca.c and also used in ocsp.c */
 int unpack_revinfo(ASN1_TIME **prevtm, int *preason, ASN1_OBJECT **phold,
-			ASN1_GENERALIZEDTIME **pinvtm, char *str);
+			ASN1_GENERALIZEDTIME **pinvtm, const char *str);
 
 #define DB_type         0
 #define DB_exp_date     1
@@ -310,8 +310,8 @@ int rotate_serial(char *serialfile, char *new_suffix, char *old_suffix);
 int rand_serial(BIGNUM *b, ASN1_INTEGER *ai);
 CA_DB *load_index(char *dbfile, DB_ATTR *dbattr);
 int index_index(CA_DB *db);
-int save_index(char *dbfile, char *suffix, CA_DB *db);
-int rotate_index(char *dbfile, char *new_suffix, char *old_suffix);
+int save_index(const char *dbfile, const char *suffix, CA_DB *db);
+int rotate_index(const char *dbfile, const char *new_suffix, const char *old_suffix);
 void free_index(CA_DB *db);
 int index_name_cmp(const char **a, const char **b);
 int parse_yesno(char *str, int def);
diff --git a/apps/ca.c b/apps/ca.c
index 15c57416242f5abf885f50d40a99b41a443cc86c..dafa93b3ebd6d92dc7f66e961f80cba22ec12e3a 100644
--- a/apps/ca.c
+++ b/apps/ca.c
@@ -143,7 +143,7 @@
 #define REV_KEY_COMPROMISE	3	/* Value is cert key compromise time */
 #define REV_CA_COMPROMISE	4	/* Value is CA key compromise time */
 
-static char *ca_usage[]={
+static const char *ca_usage[]={
 "usage: ca args\n",
 "\n",
 " -verbose        - Talk alot while doing things\n",
@@ -192,7 +192,7 @@ extern int EF_PROTECT_BELOW;
 extern int EF_ALIGNMENT;
 #endif
 
-static void lookup_fail(char *name,char *tag);
+static void lookup_fail(const char *name, const char *tag);
 static int certify(X509 **xret, char *infile,EVP_PKEY *pkey,X509 *x509,
 		   const EVP_MD *dgst,STACK_OF(CONF_VALUE) *policy,CA_DB *db,
 		   BIGNUM *serial, char *subj, int multirdn, int email_dn, char *startdate,
@@ -225,7 +225,7 @@ static int get_certificate_status(const char *ser_status, CA_DB *db);
 static int do_updatedb(CA_DB *db);
 static int check_time_format(char *str);
 char *make_revocation_str(int rev_type, char *rev_arg);
-int make_revoked(X509_REVOKED *rev, char *str);
+int make_revoked(X509_REVOKED *rev, const char *str);
 int old_entry_print(BIO *bp, ASN1_OBJECT *obj, ASN1_STRING *str);
 static CONF *conf=NULL;
 static CONF *extconf=NULL;
@@ -300,7 +300,8 @@ int MAIN(int argc, char **argv)
 	X509_REVOKED *r=NULL;
 	ASN1_TIME *tmptm;
 	ASN1_INTEGER *tmpser;
-	char **pp,*p,*f;
+	char *p,*f;
+	const char **pp;
 	int i,j;
 	const EVP_MD *dgst=NULL;
 	STACK_OF(CONF_VALUE) *attribs=NULL;
@@ -857,7 +858,7 @@ bad:
 	/* Lets check some fields */
 	for (i=0; i<sk_num(db->db->data); i++)
 		{
-		pp=(char **)sk_value(db->db->data,i);
+		pp=(const char **)sk_value(db->db->data,i);
 		if ((pp[DB_type][0] != DB_TYPE_REV) &&
 			(pp[DB_rev_date][0] != '\0'))
 			{
@@ -1501,7 +1502,7 @@ err:
 	OPENSSL_EXIT(ret);
 	}
 
-static void lookup_fail(char *name, char *tag)
+static void lookup_fail(const char *name, const char *tag)
 	{
 	BIO_printf(bio_err,"variable lookup failed for %s::%s\n",name,tag);
 	}
@@ -1646,7 +1647,7 @@ static int do_body(X509 **xret, EVP_PKEY *pkey, X509 *x509, const EVP_MD *dgst,
 	X509_NAME_ENTRY *tne,*push;
 	EVP_PKEY *pktmp;
 	int ok= -1,i,j,last,nid;
-	char *p;
+	const char *p;
 	CONF_VALUE *cv;
 	char *row[DB_NUMBER],**rrow=NULL,**irow=NULL;
 	char buf[25];
@@ -2654,7 +2655,7 @@ err:
 	return (cnt);
 	}
 
-static char *crl_reasons[] = {
+static const char *crl_reasons[] = {
 	/* CRL reason strings */
 	"unspecified",
 	"keyCompromise",
@@ -2682,7 +2683,8 @@ static char *crl_reasons[] = {
 
 char *make_revocation_str(int rev_type, char *rev_arg)
 	{
-	char *reason = NULL, *other = NULL, *str;
+	char *other = NULL, *str;
+	const char *reason = NULL;
 	ASN1_OBJECT *otmp;
 	ASN1_UTCTIME *revtm = NULL;
 	int i;
@@ -2776,7 +2778,7 @@ char *make_revocation_str(int rev_type, char *rev_arg)
  */
 
 
-int make_revoked(X509_REVOKED *rev, char *str)
+int make_revoked(X509_REVOKED *rev, const char *str)
 	{
 	char *tmp = NULL;
 	int reason_code = -1;
@@ -2869,7 +2871,7 @@ int old_entry_print(BIO *bp, ASN1_OBJECT *obj, ASN1_STRING *str)
 	return 1;
 	}
 
-int unpack_revinfo(ASN1_TIME **prevtm, int *preason, ASN1_OBJECT **phold, ASN1_GENERALIZEDTIME **pinvtm, char *str)
+int unpack_revinfo(ASN1_TIME **prevtm, int *preason, ASN1_OBJECT **phold, ASN1_GENERALIZEDTIME **pinvtm, const char *str)
 	{
 	char *tmp = NULL;
 	char *rtime_str, *reason_str = NULL, *arg_str = NULL, *p;
diff --git a/apps/ciphers.c b/apps/ciphers.c
index 7c62fc5dc3394e3dea48a8db9d700db93bdc4806..43f0ac594ad4b7b0b50683ffbc3986abf27f441d 100644
--- a/apps/ciphers.c
+++ b/apps/ciphers.c
@@ -69,7 +69,7 @@
 #undef PROG
 #define PROG	ciphers_main
 
-static char *ciphers_usage[]={
+static const char *ciphers_usage[]={
 "usage: ciphers args\n",
 " -v          - verbose mode, a textual listing of the ciphers in SSLeay\n",
 " -ssl2       - SSL2 mode\n",
@@ -84,7 +84,7 @@ int MAIN(int argc, char **argv)
 	{
 	int ret=1,i;
 	int verbose=0;
-	char **pp;
+	const char **pp;
 	const char *p;
 	int badops=0;
 	SSL_CTX *ctx=NULL;
diff --git a/apps/crl.c b/apps/crl.c
index 3eb676e16b9465266d99403b654274fdb1e11c3a..a0040fba11940320e8e7cfe4b251ac4b4fa6b1ad 100644
--- a/apps/crl.c
+++ b/apps/crl.c
@@ -72,7 +72,7 @@
 #undef POSTFIX
 #define	POSTFIX	".rvk"
 
-static char *crl_usage[]={
+static const char *crl_usage[]={
 "usage: crl args\n",
 "\n",
 " -inform arg     - input format - default PEM (DER or PEM)\n",
@@ -108,7 +108,7 @@ int MAIN(int argc, char **argv)
 	char *infile=NULL,*outfile=NULL;
 	int hash=0,issuer=0,lastupdate=0,nextupdate=0,noout=0,text=0;
 	int fingerprint = 0;
-	char **pp;
+	const char **pp;
 	X509_STORE *store = NULL;
 	X509_STORE_CTX ctx;
 	X509_LOOKUP *lookup = NULL;
diff --git a/apps/ecparam.c b/apps/ecparam.c
index 29d215e883f9f9edbce0600dee74a1f13222f02b..181cccc5c3c005d4018a99d7cc92c885806e303b 100644
--- a/apps/ecparam.c
+++ b/apps/ecparam.c
@@ -349,7 +349,7 @@ bad:
 
 		crv_len = EC_get_builtin_curves(NULL, 0);
 
-		curves = OPENSSL_malloc(sizeof(EC_builtin_curve) * crv_len);
+		curves = OPENSSL_malloc((int)(sizeof(EC_builtin_curve) * crv_len));
 
 		if (curves == NULL)
 			goto end;
diff --git a/apps/engine.c b/apps/engine.c
index b9512546122f311e454db61b3a6eba77c1e26f9f..f1585bb7385bc1a05bb80af891437d8193ad8bdd 100644
--- a/apps/engine.c
+++ b/apps/engine.c
@@ -72,7 +72,7 @@
 #undef PROG
 #define PROG	engine_main
 
-static char *engine_usage[]={
+static const char *engine_usage[]={
 "usage: engine opts [engine ...]\n",
 " -v[v[v[v]]] - verbose mode, for each engine, list its 'control commands'\n",
 "               -vv will additionally display each command's description\n",
diff --git a/apps/openssl.c b/apps/openssl.c
index e0d89d4ab413fee3c8c22ee62d96b6f687227c2b..02d86d546df3e8198bf7d70d18d0aef2ce9281b1 100644
--- a/apps/openssl.c
+++ b/apps/openssl.c
@@ -220,7 +220,8 @@ int main(int Argc, char *Argv[])
 #define PROG_NAME_SIZE	39
 	char pname[PROG_NAME_SIZE+1];
 	FUNCTION f,*fp;
-	MS_STATIC char *prompt,buf[1024];
+	MS_STATIC const char *prompt;
+	MS_STATIC char buf[1024];
 	char *to_free=NULL;
 	int n,i,ret=0;
 	int argc;
@@ -488,7 +489,7 @@ static LHASH *prog_init(void)
 	{
 	LHASH *ret;
 	FUNCTION *f;
-	int i;
+	size_t i;
 
 	/* Purely so it looks nice when the user hits ? */
 	for(i=0,f=functions ; f->name != NULL ; ++f,++i)
@@ -506,12 +507,12 @@ static LHASH *prog_init(void)
 /* static int MS_CALLBACK cmp(FUNCTION *a, FUNCTION *b) */
 static int MS_CALLBACK cmp(const void *a_void, const void *b_void)
 	{
-	return(strncmp(((FUNCTION *)a_void)->name,
-			((FUNCTION *)b_void)->name,8));
+	return(strncmp(((const FUNCTION *)a_void)->name,
+			((const FUNCTION *)b_void)->name,8));
 	}
 
 /* static unsigned long MS_CALLBACK hash(FUNCTION *a) */
 static unsigned long MS_CALLBACK hash(const void *a_void)
 	{
-	return(lh_strhash(((FUNCTION *)a_void)->name));
+	return(lh_strhash(((const FUNCTION *)a_void)->name));
 	}
diff --git a/apps/passwd.c b/apps/passwd.c
index b9d9d7a36ad7d20a9b444e1e65d7ce56ad34d146..6965c6e0902a49f4985fa85a120f286e0a86889b 100644
--- a/apps/passwd.c
+++ b/apps/passwd.c
@@ -359,13 +359,13 @@ static char *md5crypt(const char *passwd, const char *magic, const char *salt)
 	for (i = 0; i < 1000; i++)
 		{
 		EVP_DigestInit_ex(&md2,EVP_md5(), NULL);
-		EVP_DigestUpdate(&md2, (i & 1) ? (unsigned char *) passwd : buf,
+		EVP_DigestUpdate(&md2, (i & 1) ? (unsigned const char *) passwd : buf,
 		                       (i & 1) ? passwd_len : sizeof buf);
 		if (i % 3)
 			EVP_DigestUpdate(&md2, salt_out, salt_len);
 		if (i % 7)
 			EVP_DigestUpdate(&md2, passwd, passwd_len);
-		EVP_DigestUpdate(&md2, (i & 1) ? buf : (unsigned char *) passwd,
+		EVP_DigestUpdate(&md2, (i & 1) ? buf : (unsigned const char *) passwd,
 		                       (i & 1) ? sizeof buf : passwd_len);
 		EVP_DigestFinal_ex(&md2, buf, NULL);
 		}
diff --git a/apps/pkcs12.c b/apps/pkcs12.c
index c92f713f5c537479ca2c2c2f53cd3ead06d44b26..410781e7846a5d2e411179bce698ee8e9978f92a 100644
--- a/apps/pkcs12.c
+++ b/apps/pkcs12.c
@@ -83,7 +83,7 @@ int dump_certs_keys_p12(BIO *out, PKCS12 *p12, char *pass, int passlen, int opti
 int dump_certs_pkeys_bags(BIO *out, STACK_OF(PKCS12_SAFEBAG) *bags, char *pass,
 			  int passlen, int options, char *pempass);
 int dump_certs_pkeys_bag(BIO *out, PKCS12_SAFEBAG *bags, char *pass, int passlen, int options, char *pempass);
-int print_attribs(BIO *out, STACK_OF(X509_ATTRIBUTE) *attrlst, char *name);
+int print_attribs(BIO *out, STACK_OF(X509_ATTRIBUTE) *attrlst,const char *name);
 void hex_prin(BIO *out, unsigned char *buf, int len);
 int alg_print(BIO *x, X509_ALGOR *alg);
 int cert_load(BIO *in, STACK_OF(X509) *sk);
@@ -857,7 +857,7 @@ int cert_load(BIO *in, STACK_OF(X509) *sk)
 
 /* Generalised attribute print: handle PKCS#8 and bag attributes */
 
-int print_attribs (BIO *out, STACK_OF(X509_ATTRIBUTE) *attrlst, char *name)
+int print_attribs (BIO *out, STACK_OF(X509_ATTRIBUTE) *attrlst,const char *name)
 {
 	X509_ATTRIBUTE *attr;
 	ASN1_TYPE *av;
diff --git a/apps/req.c b/apps/req.c
index f43c477f75b746b6b63cd28581c831ef86cd5fcc..db70dc22755c2caaa22aae264dc5d1ebec820df7 100644
--- a/apps/req.c
+++ b/apps/req.c
@@ -130,16 +130,16 @@ static int prompt_info(X509_REQ *req,
 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *sk,
 				STACK_OF(CONF_VALUE) *attr, int attribs,
 				unsigned long chtype);
-static int add_attribute_object(X509_REQ *req, char *text,
-				char *def, char *value, int nid, int n_min,
+static int add_attribute_object(X509_REQ *req, char *text, const char *def,
+				char *value, int nid, int n_min,
 				int n_max, unsigned long chtype);
-static int add_DN_object(X509_NAME *n, char *text, char *def, char *value,
+static int add_DN_object(X509_NAME *n, char *text, const char *def, char *value,
 	int nid,int n_min,int n_max, unsigned long chtype, int mval);
 #ifndef OPENSSL_NO_RSA
 static int MS_CALLBACK req_cb(int p, int n, BN_GENCB *cb);
 #endif
 static int req_check_len(int len,int n_min,int n_max);
-static int check_end(char *str, char *end);
+static int check_end(const char *str, const char *end);
 #ifndef MONOLITH
 static char *default_config_file=NULL;
 #endif
@@ -1280,7 +1280,8 @@ static int prompt_info(X509_REQ *req,
 	char buf[100];
 	int nid, mval;
 	long n_min,n_max;
-	char *type,*def,*value;
+	char *type, *value;
+	const char *def;
 	CONF_VALUE *v;
 	X509_NAME *subj;
 	subj = X509_REQ_get_subject_name(req);
@@ -1506,7 +1507,7 @@ static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk,
 	}
 
 
-static int add_DN_object(X509_NAME *n, char *text, char *def, char *value,
+static int add_DN_object(X509_NAME *n, char *text, const char *def, char *value,
 	     int nid, int n_min, int n_max, unsigned long chtype, int mval)
 	{
 	int i,ret=0;
@@ -1562,8 +1563,8 @@ err:
 	return(ret);
 	}
 
-static int add_attribute_object(X509_REQ *req, char *text,
-				char *def, char *value, int nid, int n_min,
+static int add_attribute_object(X509_REQ *req, char *text, const char *def,
+				char *value, int nid, int n_min,
 				int n_max, unsigned long chtype)
 	{
 	int i;
@@ -1660,10 +1661,10 @@ static int req_check_len(int len, int n_min, int n_max)
 	}
 
 /* Check if the end of a string matches 'end' */
-static int check_end(char *str, char *end)
+static int check_end(const char *str, const char *end)
 {
 	int elen, slen;	
-	char *tmp;
+	const char *tmp;
 	elen = strlen(end);
 	slen = strlen(str);
 	if(elen > slen) return 1;
diff --git a/apps/rsa.c b/apps/rsa.c
index afbe0b4eb0181c6cc2438150ef10cbcdb5609e01..ee657205300d3061f25ba99804a3961eb2451537 100644
--- a/apps/rsa.c
+++ b/apps/rsa.c
@@ -308,7 +308,7 @@ bad:
 			BIO_printf(out,"RSA key ok\n");
 		else if (r == 0)
 			{
-			long err;
+			unsigned long err;
 
 			while ((err = ERR_peek_error()) != 0 &&
 				ERR_GET_LIB(err) == ERR_LIB_RSA &&
diff --git a/apps/s_cb.c b/apps/s_cb.c
index 92d9ae8893159143375a7e32e239a8358deef6a2..9a35d46adc2866fabf00de08aad02f2e44988336 100644
--- a/apps/s_cb.c
+++ b/apps/s_cb.c
@@ -283,7 +283,7 @@ long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
 
 void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 	{
-	char *str;
+	const char *str;
 	int w;
 
 	w=where& ~SSL_ST_MASK;
@@ -346,14 +346,14 @@ void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *
 
 		if (len > 0)
 			{
-			switch (((unsigned char*)buf)[0])
+			switch (((const unsigned char*)buf)[0])
 				{
 				case 0:
 					str_details1 = ", ERROR:";
 					str_details2 = " ???";
 					if (len >= 3)
 						{
-						unsigned err = (((unsigned char*)buf)[1]<<8) + ((unsigned char*)buf)[2];
+						unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
 						
 						switch (err)
 							{
@@ -422,7 +422,7 @@ void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *
 			
 			if (len == 2)
 				{
-				switch (((unsigned char*)buf)[0])
+				switch (((const unsigned char*)buf)[0])
 					{
 				case 1:
 					str_details1 = ", warning";
@@ -433,7 +433,7 @@ void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *
 					}
 
 				str_details2 = " ???";
-				switch (((unsigned char*)buf)[1])
+				switch (((const unsigned char*)buf)[1])
 					{
 				case 0:
 					str_details2 = " close_notify";
@@ -514,7 +514,7 @@ void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *
 
 			if (len > 0)
 				{
-				switch (((unsigned char*)buf)[0])
+				switch (((const unsigned char*)buf)[0])
 					{
 				case 0:
 					str_details1 = ", HelloRequest";
@@ -567,7 +567,7 @@ void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *
 			{
 			if (i % 16 == 0 && i > 0)
 				BIO_printf(bio, "\n   ");
-			BIO_printf(bio, " %02x", ((unsigned char*)buf)[i]);
+			BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
 			}
 		if (i < len)
 			BIO_printf(bio, " ...");
diff --git a/apps/s_client.c b/apps/s_client.c
index 2f233da177378511e333fedf24cc8fc8452f557c..d5c0a4f792fe92f31db9e395eba41864a325d227 100644
--- a/apps/s_client.c
+++ b/apps/s_client.c
@@ -1020,7 +1020,7 @@ static void print_stuff(BIO *bio, SSL *s, int full)
 	{
 	X509 *peer=NULL;
 	char *p;
-	static char *space="                ";
+	static const char *space="                ";
 	char buf[BUFSIZ];
 	STACK_OF(X509) *sk;
 	STACK_OF(X509_NAME) *sk2;
diff --git a/apps/s_server.c b/apps/s_server.c
index 0f102ce7cb042f05775b2f9a28d0a574d56c5b0e..7e43b1afe42400da9a099fe5b0921bcf8d103a35 100644
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -239,7 +239,7 @@ extern int verify_depth;
 static char *cipher=NULL;
 static int s_server_verify=SSL_VERIFY_NONE;
 static int s_server_session_id_context = 1; /* anything will do */
-static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
+static const char *s_cert_file=TEST_CERT,*s_key_file=NULL;
 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
 #ifdef FIONBIO
 static int s_nbio=0;
@@ -1281,7 +1281,7 @@ static int sv_body(char *hostname, int s, unsigned char *context)
 					}
 				if (buf[0] == 'P')
 					{
-					static char *str="Lets print some clear text\n";
+					static const char *str="Lets print some clear text\n";
 					BIO_write(SSL_get_wbio(con),str,strlen(str));
 					}
 				if (buf[0] == 'S')
@@ -1633,7 +1633,7 @@ static int www_body(char *hostname, int s, unsigned char *context)
 			char *p;
 			X509 *peer;
 			STACK_OF(SSL_CIPHER) *sk;
-			static char *space="                          ";
+			static const char *space="                          ";
 
 			BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
 			BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");
@@ -1713,7 +1713,7 @@ static int www_body(char *hostname, int s, unsigned char *context)
 			{
 			BIO *file;
 			char *p,*e;
-			static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
+			static const char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
 
 			/* skip the '/' */
 			p= &(buf[5]);
diff --git a/apps/sess_id.c b/apps/sess_id.c
index c379b0e373d23e403a6399823688d9baf7214230..b99179f27679daa2b1d5085bd7089d9050b69cf0 100644
--- a/apps/sess_id.c
+++ b/apps/sess_id.c
@@ -69,7 +69,7 @@
 #undef PROG
 #define PROG	sess_id_main
 
-static char *sess_id_usage[]={
+static const char *sess_id_usage[]={
 "usage: sess_id args\n",
 "\n",
 " -inform arg     - input format - default PEM (DER or PEM)\n",
@@ -95,7 +95,7 @@ int MAIN(int argc, char **argv)
 	int informat,outformat;
 	char *infile=NULL,*outfile=NULL,*context=NULL;
 	int cert=0,noout=0,text=0;
-	char **pp;
+	const char **pp;
 
 	apps_startup();
 
diff --git a/apps/smime.c b/apps/smime.c
index 57ac6d8a265c0f9e3b7e22273714e96ccfb8587e..253cca7f59ba11094fb995f06b35b7ddd43ba466 100644
--- a/apps/smime.c
+++ b/apps/smime.c
@@ -87,7 +87,7 @@ int MAIN(int argc, char **argv)
 	int operation = 0;
 	int ret = 0;
 	char **args;
-	char *inmode = "r", *outmode = "w";
+	const char *inmode = "r", *outmode = "w";
 	char *infile = NULL, *outfile = NULL;
 	char *signerfile = NULL, *recipfile = NULL;
 	char *certfile = NULL, *keyfile = NULL, *contfile=NULL;
diff --git a/apps/spkac.c b/apps/spkac.c
index 47ee53f1eef6e2cda64c0192ae2fdf2d1ee73180..0191d0a783f7db816318bf53204460dce3efa5b6 100644
--- a/apps/spkac.c
+++ b/apps/spkac.c
@@ -87,7 +87,8 @@ int MAIN(int argc, char **argv)
 	int verify=0,noout=0,pubkey=0;
 	char *infile = NULL,*outfile = NULL,*prog;
 	char *passargin = NULL, *passin = NULL;
-	char *spkac = "SPKAC", *spksect = "default", *spkstr = NULL;
+	const char *spkac = "SPKAC", *spksect = "default";
+	char *spkstr = NULL;
 	char *challenge = NULL, *keyfile = NULL;
 	CONF *conf = NULL;
 	NETSCAPE_SPKI *spki = NULL;
@@ -200,7 +201,7 @@ bad:
 		}
 		spki = NETSCAPE_SPKI_new();
 		if(challenge) ASN1_STRING_set(spki->spkac->challenge,
-						 challenge, strlen(challenge));
+						 challenge, (int)strlen(challenge));
 		NETSCAPE_SPKI_set_pubkey(spki, pkey);
 		NETSCAPE_SPKI_sign(spki, pkey, EVP_md5());
 		spkstr = NETSCAPE_SPKI_b64_encode(spki);
diff --git a/apps/x509.c b/apps/x509.c
index 9dc99dfa0fa3679ff35e1b468d35c26501109490..393d0d1f47c3235b1b3f9c15e54f716cc3d26f6f 100644
--- a/apps/x509.c
+++ b/apps/x509.c
@@ -83,7 +83,7 @@
 #define	POSTFIX	".srl"
 #define DEF_DAYS	30
 
-static char *x509_usage[]={
+static const char *x509_usage[]={
 "usage: x509 args\n",
 " -inform arg     - input format - default PEM (one of DER, NET or PEM)\n",
 " -outform arg    - output format - default PEM (one of DER, NET or PEM)\n",
@@ -179,7 +179,7 @@ int MAIN(int argc, char **argv)
 	int C=0;
 	int x509req=0,days=DEF_DAYS,modulus=0,pubkey=0;
 	int pprint = 0;
-	char **pp;
+	const char **pp;
 	X509_STORE *ctx=NULL;
 	X509_REQ *rq=NULL;
 	int fingerprint=0;