IuPS: dev hack: init hardcoded Ki on ATT REQ
DEVELOPMENT HACK: Our current HLR does not support 3G authentication tokens. A new HLR/VLR implementation is being developed. Until it is ready and actual milenage authentication is properly supported, we are hardcoding a fixed Ki and use 2G auth. Change-Id: Ieca45960fa941a3a706c6e479b04b9f2ef89d860
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@ -42,6 +42,7 @@
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#include <osmocom/core/signal.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/rate_ctr.h>
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#include <osmocom/crypt/auth.h>
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#include <osmocom/gsm/apn.h>
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#include <osmocom/gsm/protocol/gsm_04_08_gprs.h>
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@ -1039,6 +1040,34 @@ static int gsm48_rx_gmm_att_req(struct sgsn_mm_ctx *ctx, struct msgb *msg,
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ctx->ra = ra_id;
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if (ctx->ran_type == MM_CTX_T_GERAN_Gb)
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ctx->gb.cell_id = cid;
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else if (ctx->ran_type == MM_CTX_T_UTRAN_Iu) {
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/* DEVELOPMENT HACK: Our current HLR does not support 3G
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* authentication tokens. A new HLR/VLR implementation is being
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* developed. Until it is ready and actual milenage
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* authentication is properly supported, we are hardcoding a
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* fixed Ki and use 2G auth. */
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unsigned char tmp_rand[16];
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/* Ki 000102030405060708090a0b0c0d0e0f */
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struct osmo_sub_auth_data auth = {
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.type = OSMO_AUTH_TYPE_GSM,
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.algo = OSMO_AUTH_ALG_COMP128v1,
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.u.gsm.ki = {
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
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0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
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0x0e, 0x0f
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},
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};
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/* XXX: Hack to make 3G auth work with special SIM card */
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ctx->auth_state = SGSN_AUTH_AUTHENTICATE;
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RAND_bytes(tmp_rand, 16);
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memset(&ctx->auth_triplet.vec, 0, sizeof(ctx->auth_triplet.vec));
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osmo_auth_gen_vec(&ctx->auth_triplet.vec, &auth, tmp_rand);
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ctx->auth_triplet.key_seq = 0;
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}
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/* Update MM Context with other data */
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ctx->drx_parms = drx_par;
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ctx->ms_radio_access_capa.len = ms_ra_acc_cap_len;
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